Beginner Seasoned
Pick your zone and the dates re-calibrate.
The Guide Crops Vol. 003

Snow Peas

in Zone 9, this week

Snow peas are the flat, tender peas you eat pod and all, stir-fried or raw, picked while the pods are still flat and the peas inside are tiny. They are a cool-weather crop: you plant the seeds straight in the garden as soon as the soil can be worked in spring, and again in late summer for fall, not in the heat of summer. Young plants handle frost, but the vines fade once it gets hot. Tall kinds need a trellis to climb; short kinds hold each other up. They go from seed to harvest in about two months and, like all peas, feed the soil with nitrogen. They are a close cousin of the plumper sugar snap pea. Snow peas (Pisum sativum) are a cool-season, frost-hardy legume grown for their flat, edible immature pods, picked young before the seeds swell (the mangetout type). Unlike warm-season beans, peas are sown as early as the soil can be worked in spring and again in fall, and they decline once summer heat passes about 80°F, so the season runs opposite a bean's. Climbing types need a trellis while bush types stand together; as a legume the crop fixes much of its own nitrogen and asks little feeding, reaching a flat, sweet pod in about 55 to 70 days. They are distinct from the sugar-snap pea, a cousin grown for plump, rounded pods eaten whole when filled.

Snow Peas mature plant
Fig. 01 · Snow Peas, mature Zone 9
Mature in
55-70d
from transplant
Sunlight
Full sun
6-8 hrs daily
Water
Moderate
6 inches / week
Spacing
1 to 3 in
between plants
Soil pH
6-7
slightly acidic
Today · in your zone

What's happening right now

October 21 · Zone 9 · Stage 01 · Germination

Off-season for snow peas in zone 9.

Seasoned
Microclimate · Zone 9a vs 9b

Your zone, at a finer grain

Zone 9 averages a last frost around March 1. Within Zone 9, the colder half (9a, winters down to 20°F) runs about a week later. The warmer half (9b, winters down to 25°F) runs about a week earlier. The plant app picks your subzone from your ZIP.

SubzoneLast springFirst fallGrowing daysWinter minFruits reliably
9aMar 8Nov 24~26120-25°FYes · two seasons
9bFeb 28Nov 30~27525-30°FYes · two seasons

Averages from 8 weather stations per subzone, drawn from NOAA 1991-2020 Climate Normals. Your actual frost date can vary by up to two weeks based on elevation, proximity to water, and local topography.

Source: NOAA 1991-2020 Climate Normals Methodology
Your climate region in Zone 9
The season at a glance

Planting calendar

In Zone 9, snow peas can be planted February through May, then again October, skipping the summer heat. Harvest runs November through May.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
plant
too early
plant
plant
plant
plant
too hot
too hot
too hot
too hot
plant
too late
too late
harvest
harvest
harvest
harvest
harvest
harvest
indoors
plant out
harvest
Seasoned
Stagger your sowings

Succession planting

Plant a little patch of snow peas every week or two instead of all at once, so you get a steady supply before the heat ends them. Do this through cool spring, and again in late summer for fall where it works. In hot areas, skip summer and keep sowing through the cool months.Snow peas crop over a short window and then decline in the heat, so sow small batches a week or two apart through the cool spring window rather than all at once, and again for fall where summers allow. In hot regions skip summer entirely and succession-sow through the cool fall, winter, and early spring.

Every 2 weeks · sow a short new rowUp to 7 sowings a seasonToo hot to sow midsummer
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
sow
harvest
keep sowing
too hot
continuous harvest
The season, mapped

Seed to garden

Plant pea seeds right where they will grow, as soon as the soil can be worked in spring and again in late summer for fall. Peas do not like their roots disturbed, so skip starting them indoors. Plant about 1 to 1.5 inches deep.Direct-sow into cool, workable soil as early as the ground can be prepared in spring, and again for a fall crop. Peas resent root disturbance and germinate readily in cool soil, so transplanting offers no advantage. Sow about 1 to 1.5 inches deep; some growers presoak seed overnight to speed emergence.

  1. 01
    Sow outside
    Feb - Mar, Oct
  2. 02
    First harvest
    From Nov 1
    55-70 days from sowing
Start method
Direct
Soil temp
40-75°F
From seed to fruit

The growing journey

Stage 01 · Germination
01
Germination
Days 0-14 · current stage
Bare soil for a week or so, then the little plants push up. Peas come up in cool soil and can go in very early, but seed planted in cold, soggy ground rots instead of sprouting. They come up fastest when the soil is around 55 to 65°F.Bare soil for about a week to ten days, then the seedling pushes up through the surface. Peas germinate in cool soil and can be sown as soon as the ground is workable, but seed sown into cold, saturated ground rots before it emerges. Emergence is quickest in soil around 55 to 65°F and slows below that; the lower limit for germination is about 40°F.
Plant as soon as you can work the soil, about 1 to 1.5 inches deep, in moist but well-drained ground. Do not keep the bed soggy after planting, since that rots the seed. Soaking the seeds overnight before planting can speed things up.Sow as early as the soil can be worked, about 1 to 1.5 inches deep, into a moist but well-drained bed; do not sow into waterlogged ground. There is no benefit to soaking the bed afterward, which suffocates the seed and feeds root rot. An optional overnight presoak of the seed speeds emergence, and a pea inoculant helps nodulation where peas are new to the bed.
FROM PLANT · Plant peas as early as you can work the soil, but make sure it drains well and is not soggy. Pea seeds sprout in cool soil but rot in cold, wet mud, which is the usual reason for gaps in the row. Good drainage matters more than planting on an exact date.Sow peas as soon as the soil can be worked, but into moist, well-drained ground, not cold mud. Pea seed germinates from about 40°F up and fastest at 55 to 65°F, yet it rots in cold, saturated soil, the most common cause of a thin stand. Raised beds and good drainage matter more than calendar date.
FROM PLANT · Peas make their own nitrogen with the help of tiny bacteria on their roots. If peas or beans have grown in your bed before, the bacteria are already there. In a brand-new bed you can coat the seed with a pea inoculant powder to help, but it is optional.Peas fix their own nitrogen with Rhizobium bacteria on their roots. Where peas or beans have grown before, those bacteria are already present; in a new bed, an inexpensive seed inoculant can improve nodulation. It is optional, not required, and no substitute for good drainage and tilth.
02
Seedling
Days 10-25
Small plants a few inches tall with their first leaves and the little curling tendrils that peas use to climb. Young peas handle light frost fine, but this is when cutworms can cut them off at the ground and slugs can chew them in wet weather.Young plants a few inches tall putting out their first leaves and, soon, the curling tendrils that mark a climbing crop. Pea seedlings are cold-hardy and shrug off light spring frost, but they are the stage most vulnerable to cutworms, which sever them at the soil line, and to slugs in wet weather.
Put up the support now, before the vines sprawl: a trellis, netting, or twiggy branches alongside the row, even for short types. Keep the soil evenly moist, pull weeds early, and weed shallowly so you do not damage the roots. Check for plants cut off at the ground, which means cutworms.Set up support now, before the vines flop: push twiggy branches or a trellis or netting in alongside even bush types, which crop better held up. Keep the bed evenly moist and weed-free, cultivate shallowly since pea roots run near the surface, and watch for toppled seedlings that signal cutworms.
FROM PLANT · Put up the trellis or netting early, when you plant or right after. Even short peas do better held up off the ground, and tall ones need support before they start to flop. If you wait too long you can tear the vines or hurt the roots putting it in.Put the support in early, at or just after sowing. Even bush peas crop better and stay cleaner held up off the ground, and tall types must have a trellis or netting before the vines start to sprawl. Setting it up later risks tearing the brittle vines and damaging shallow roots.
03
Vine growth
Days 20-45
The vines climb and fill in, their tendrils grabbing the support as they go. Short types reach two to three feet, tall types four to five. Peas make much of their own food (nitrogen) at this stage, so you want healthy green growth, not huge dark leafy vines, which usually mean too much fertilizer and fewer pods.Steady growth as the vines climb and fill the trellis, tendrils gripping as they go. Bush types reach two to three feet and stand together; tall types climb to four or five feet. The plants are fixing much of their own nitrogen now through root nodules, so vigorous green growth, not dark, overfed lushness, is the goal.
Keep the watering steady and do not add fertilizer now. Peas need very little, and extra just gives you big leafy vines with fewer pods. Help the first tendrils find the trellis, and keep the plants from getting crowded so air moves through them.Keep moisture steady and resist the urge to feed; peas need little nitrogen and extra now pushes foliage at the expense of pods. Guide the first tendrils onto the support, and keep the rows open for airflow to hold off powdery mildew as the weather warms.
FROM PLANT · Do not add nitrogen fertilizer now. Peas make much of their own from the air, and extra fertilizer just gives you big leafy vines with fewer peas. A little compost mixed into the bed before planting is all they need.Hold off on nitrogen. As legumes, peas fix much of their own through root nodules, and extra nitrogen now drives leafy vine growth at the expense of flowers and pods. A little compost or balanced fertilizer worked in before sowing is all peas need.
04
Flowering
Days 40-60
Small white (sometimes pink or purple) flowers open along the vines. This is an important time for water: if the plants dry out or it stays hotter than about 80°F, the flowers drop without making pods. The flowers and tiny pods are much more sensitive to frost than the young plants were.Small white (sometimes pink or purple) pea flowers open along the vines. This is a moisture-critical stage: water stress now aborts blossoms, and sustained heat above about 80°F causes the plant to drop flowers instead of setting pods. The flowers and tiny pods are far more frost-tender than the hardy seedlings were.
Keep the water steady and generous while the plants flower, because dry soil now means fewer peas. Water the soil, not the leaves. Cover the plants overnight if a frost threatens the open flowers, and water deeply before a heat wave. The plants set pods again once it cools, but the spring crop is running out of cool weather by now.Keep moisture steady and ample through bloom; this is where water stress directly cuts the crop. Avoid overhead watering on the dense canopy. If a late frost threatens open flowers, cover the planting overnight, and in a heat wave water deeply ahead of time; the plant will set again when it cools, but the spring crop is racing the heat at this point.
FROM PLANT · Keep the water steady and generous while the plants flower. Flowering and pod-filling are when peas most need water, and letting them dry out now means fewer peas. Water the soil in the morning, not the leaves, to keep disease down.Keep moisture steady and ample through bloom. Flowering and pod fill are the moisture-critical stages, and water stress now aborts blossoms and shrinks the crop. Water at the soil in the morning, not overhead, to keep the canopy dry and slow powdery mildew.
FROM PLANT · The spring crop is in a race with the heat. Once it stays above about 80°F, peas drop their flowers instead of making pods, so a planting that flowers as summer arrives makes few peas. Plant early, and where summer comes fast, pick the earliest, quickest snow peas.The spring crop is racing the heat. Once sustained temperatures pass about 80°F, peas drop blossoms instead of setting pods, so a planting that flowers into early summer heat sets poorly. Sow early, and where summers come on fast, lean to the earliest, shortest-season snow peas.
05
Pod development
Days 48-70
Flat pods form where the flowers were and grow quickly. With snow peas you want to pick them while they are still flat, bright green, and tender, before the little peas inside start to swell. They are ready about a week after the flowers open, and they get tough and stringy fast if you leave them.Flat pods form where the flowers were and lengthen quickly. For snow peas the pickable window is brief and early: harvest while the pods are still flat, bright, and tender, before the seeds inside begin to swell and round out the pod. Snow peas reach this stage about a week after flowering. Left on the vine they turn tough, fibrous, and starchy fast.
Keep the soil evenly moist while the pods grow. Start checking the vines every day once the first pods appear, because snow peas are tender for only a short time before they get tough.Maintain even moisture right through pod fill, the payoff stage for steady watering. Begin checking the vines daily as the first pods size up, since the snow-pea window is short and the pods go from tender to tough in a few days.
FROM PLANT · Pick snow peas while the pods are still flat, before the peas inside fill out. That flat, tender pod is the whole point; once the peas swell, the pod gets tough. They are ready about a week after flowering, so start checking early.Pick snow peas while the pods are still flat, before the seeds swell. The whole point of a snow pea is the tender flat pod; once the peas inside round out, the pod turns tough and starchy. They reach pickable size about a week after flowering, so start checking early.
06
Harvest
Days 55-75
Flat, bright, crisp pods picked while the peas inside are still tiny, about a week after flowering. Pick every couple of days: regular picking keeps more pods coming, while pods left to fill up tell the plant to quit. Snow peas crop for a few weeks, then fade as it warms up.Flat, bright, crisp pods snapped from the vine while the seeds inside are still tiny, about 7 days after flowering. Picking every couple of days is essential: regular harvest keeps the vines flowering and producing, while pods left to mature signal the plant to stop. Most snow peas crop over a few weeks, then decline as the heat builds.
Pick in the cool morning, holding the vine with one hand and pulling the pod with the other so you do not tear the stem. Pick every two or three days, because old pods left on the plant make it stop producing. When the vines fade in the heat, pull them up and compost them.Pick in the cool of the morning, holding the vine with one hand and the pod with the other so you do not tear the brittle stems. Harvest every two to three days; leaving overmature pods on the vine ends the crop early. Pull the planting once it declines in the heat and add the vines to the compost, roots left to return their nitrogen.
FROM PLANT · Pick every two or three days. Snow peas crop for a short time, and leaving old pods on the vine tells the plant to quit. Picking often keeps more pods coming and catches them while they are flat, sweet, and tender.Pick every two to three days. Snow peas crop over a short window, and leaving mature pods on the vine signals the plant to stop flowering and ends the crop early. Frequent picking keeps the vines producing and catches the pods at their flat, sweet, tender best.
Beginner
Know your soil

Your soil

Identify yours

Not sure what soil you have? Grab a small handful of damp soil from your garden bed and squeeze it. If it crumbles apart easily, it's sandy. If it holds together but breaks when you poke it, it's loam (what most vegetables want). If it stays in a hard, slippery ball, it's clay.

What this crop wants

Peas like loose, fertile soil that drains well, with some compost mixed in. The main thing they care about is good drainage, because peas planted in cold, soggy soil tend to rot before they sprout. If water sits on your bed for a long time after rain, work in compost or plant on a raised bed first.

If your soil doesn't match

You have sandy soil

Mix 2-3 inches of compost into the top 6 inches of your bed before planting. Compost holds moisture (which sandy soil drains too fast) and adds the nutrients sandy soil tends to lack. Repeat each season. Compost breaks down over time.

You have clay soil

Mix 2-3 inches of compost AND a few inches of coarse sand or perlite into the top 6 inches of your bed. The compost feeds the plants; the sand breaks up the clay so air and water can move through. Don't add sand without compost. It can compact like concrete.

Containers and raised beds

If amending your soil sounds like too much work, or if your soil is heavy clay, full of rocks, or contaminated, build over it. A raised bed at least 12 inches deep filled with a 50/50 mix of compost and sandy loam gives you ideal growing soil with no battles. A 5-gallon container with quality potting mix does the same for one plant at a time. Both bypass your native soil entirely.

Learn more about your soil
The specs

Care guide

The numbers that matter, at a glance.

Sunlight
Full sun · 6-8 hrs/day
Water
moderate
Spacing
1 to 3 inches
Soil
loam, sandy loam
Days to maturity
55-70 days from transplant
Soil pH
6 to 7
Container OK?
Yes · 5+ gal pot
Germination temp
40-75°F
In a pot

Yes, 5 gallons and up

Bush and dwarf snow peas grow well in a pot at least 5 gallons and 8 inches deep. Push a few short twiggy branches or a small trellis into the pot for the tendrils to climb, plant several seeds, and keep the mix evenly moist.Dwarf and bush snow pea types suit containers well; tall climbing varieties are awkward in pots because of their trellis height. A pot of at least 5 gallons and 8 inches deep, planted with several seeds and given a few twiggy branches or a small trellis for support, performs well with even moisture.

Pot size
5 gallons and up
Drainage
Drainage holes are a must. Skip the gravel layer. Empty any saucer after watering so the pot never sits in standing water, which brings on the root rots peas are prone to in cool, wet conditions.
Watering
Pots dry out faster than garden beds, so check the soil daily in warm weather and water when the top inch is dry.Containers dry faster than beds; monitor daily in warm spells and water when the top inch dries.
Depth and shape
At least 8 inches deep. Match the container to the variety: a wide, shallow pot suits low bush types grown several together, while a tall climbing variety needs a deep, stable pot that will not tip under a loaded trellis. For most container growers a dwarf or bush snow pea in a broad pot is the easier choice.
Self-watering pot
Yes. A self-watering container suits peas well, smoothing out the steady moisture they want through pod fill while avoiding the soggy roots they dislike.
Mix
A well-draining potting mix; avoid native garden soil, which compacts and drains poorly in containers and worsens root rot. Blend in compost for baseline fertility and tilth; peas need little added nitrogen.
Feeding
Feeding needs stay low in containers; compost blended into the mix usually suffices.
One to try

Oregon Sugar Pod IIThe standard home-garden snow pea: semi-dwarf vines around 30 inches, heavy yields of large flat pods, and broad disease resistance including powdery mildew and Fusarium wilt. The most widely recommended choice.

2 more compact types

Dwarf Gray SugarCompact heirloom around 24 to 30 inches with attractive purple flowers; an early, space-saving snow pea that resists Fusarium wilt and suits containers and small beds.

SnowbirdEarly, bush-type snow pea around 18 inches that bears pods in clusters of two or three for easy picking; a good quick, self-supporting choice.

Pot safety

Ask what your balcony or roof can carry

A balcony or roof can only hold so much weight. Before you set heavy pots there, ask a building architect what it can safely carry.Illinois Extension's guidance is to consult a building architect about weight limits before placing heavy pots on a balcony or rooftop garden. It gives no weight figure.

Never grow food in a container with anything toxic in it

Many kinds of containers can be used. Whatever you choose, keep anything toxic out of it, especially if you are growing food.Colorado State accepts nearly any container material but warns against using a container that holds toxic materials, especially for edible plants. Illinois adds that a vegetable container should be free of chemicals toxic to plants or people, and urges caution with treated lumber when growing food. If you cannot account for what a repurposed container once held, that alone is a reason to keep food out of it.

Secure hanging containers well

Fasten hanging baskets and window or rail boxes securely. Think about what is below them too, since they can drip on people or things underneath.Illinois Extension asks growers to secure hanging containers well and to think through the safety issues of hanging them. Placement matters too, since a hanging container can drip onto people or belongings below.

Soil chemistry

Soil pH for snow peas

Preferred
6 to 7
Tolerated
6 to 7.5

Peas grow best in soil from about 6.0 to 7.0, which is slightly acidic to neutral. They do poorly in strongly acidic soil below 6.0, so if a soil test reads low, mix in some lime before planting. Most garden beds are already in a good range.Aim for a soil pH of about 6.0 to 7.0. Clemson recommends a 6.0 to 6.5 target, and growth is inhibited on acid soils at pH 6.0 and below, so lime an acid plot the season before sowing. Peas tolerate up to roughly 7.5, and a soil test is the reliable way to confirm both pH and fertility before the season starts.

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Steady hand on the hose

Watering

When & how much
Frequency
Water regularly so the soil stays evenly moist but not soggy. Pay closest attention while the plants are flowering and the pods are filling out.Regular and even through the season, keeping the soil moist but never waterlogged. The need peaks during flowering and pod fill; before that, established vines in cool weather ask relatively little.
Amount
Water deeply enough to wet the soil about 6 inches down. Deep, less frequent watering beats a daily light sprinkle.Enough to wet the root zone roughly 6 inches down; watering deeply and less often builds deeper roots than frequent light sprinkles. Clemson advises watering to moisten the soil to a depth of 6 inches.
Method
Water the soil, not the leaves, and do it in the morning so the plants dry off during the day. Wet leaves, especially overnight, help spread disease.Water at the soil level in the morning so the foliage dries before evening; this limits the powdery mildew and Ascochyta the crop is prone to. Avoid overhead watering on a trellised crop in particular.
Signs of trouble
Too much water
If the soil is wet but the plants still wilt or the lower leaves turn yellow, you may be overwatering. Soggy soil rots pea roots.Yellowing lower leaves, wilting despite wet soil, and stunted vines point to waterlogged roots and the onset of the root rots peas are prone to in cold, wet ground.
Too little water
If plants dry out while flowering, they drop their flowers and the pods come out small and tough. Keep the water steady at that stage.Drought stress during and after flowering aborts blossoms and produces small, tough, stringy pods, and it hastens the late-season decline as heat arrives.
Feeding rhythm

Feeding

Frequency
low
Type
balanced pre-plant, little to no nitrogen
When to start
work a little balanced fertilizer or compost into the bed before sowing

Peas make much of their own food from the air, so they barely need fertilizer. Mix a little compost or balanced fertilizer into the bed before you plant and that is enough. Too much fertilizer gives you big leafy vines but fewer pods. If you like, you can coat the seed with a pea inoculant powder, which helps the roots make nitrogen, but it is optional.Snow peas are light feeders. As legumes they fix much of their own nitrogen through root nodules, so heavy nitrogen drives leafy vine growth at the expense of pods. Without a soil test, work a little balanced fertilizer or compost into the bed before sowing; that is usually all peas need. An inoculant of the right Rhizobium bacteria is optional and can help nodulation where peas have not been grown before. Avoid high-nitrogen feeds, which delay flowering and cut pod set.

N · P · K = 5-10-10

A balanced vegetable fertilizer like 5-10-10 mixed into the bed before planting is plenty.A balanced 5-10-10 worked in before sowing if no soil test is available; skip extra nitrogen, which peas supply themselves.

Try 5-10-10 pre-plant
Who grows well together

Companion planting

Peas get along with most cool-season vegetables. They grow happily beside carrots, radishes, and lettuce, and because they leave nitrogen in the soil, they are a good crop to grow before a leafy green. The pairing to avoid is planting peas right next to onions or garlic. As a nitrogen-fixing legume, peas leave the soil richer for what follows and sit comfortably among the other cool-season crops grown in the same early-spring and fall windows: carrots, radishes, and lettuce are classic bed-mates. The long-standing caution is to keep peas away from the alliums (onion, garlic), which are widely held to suppress legumes through the same root-bacteria interference seen with beans.

Other
Carrot
A classic cool-season neighbor that shares peas' early-spring and fall timing; the carrots root deep while the peas climb, so they use the bed without crowding.Carrots and peas grow in the same cool windows and use the bed in complementary ways: the carrot works the soil deep while the pea climbs above it, and the peas' nitrogen fixation lightly benefits the carrot. The pairing is traditional and compatibility-based rather than a measured pest defense, so expect easy cohabitation more than active protection. Traditional
Radish
Radishes sprout fast and mark the pea rows while the slower peas come up, then are pulled long before the peas need the space.Radishes germinate in days and mark the rows while the peas emerge, and they finish and come out weeks before the peas size up, so they never compete. Both are cool-season crops sown at the same time, which makes them a tidy, low-risk interplant rather than a measured protective pairing. Traditional
Lettuce
Lettuce shares peas' cool-season timing and stays low, tucking in along the base of the pea row or trellis.Lettuce slots in below a pea trellis or alongside a bush row, sharing the same cool-season window and water needs while occupying a different layer of the bed. As the peas leaf out they offer the lettuce a little light afternoon shade that delays bolting. It is a compatibility pairing on sound shared-conditions grounds rather than a measured protective one. Well-grounded
Keep apart from
Onion Onions and other alliums are traditionally kept away from peas, which are said to grow poorly near them.Onions next to peas is the better-grounded of the 'bad' pairings. Alliums release antibacterial sulfur compounds that are widely held to interfere with the Rhizobium bacteria on pea roots, the bacteria the plant relies on to fix nitrogen, so pea growth tends to stall near onions. Keep them in separate parts of the bed. The useful corollary is that peas grown before an allium crop leave the soil better for it. Well-grounded
Garlic Like onions, garlic is a traditional bad neighbor for peas.Garlic acts on peas the way onions do. As an allium it gives off antibacterial sulfur compounds held to disrupt the nitrogen-fixing bacteria on pea roots, slowing the vines. Treat garlic and peas as bed-mates to keep apart, and use the pea-then-allium rotation to your advantage instead. Well-grounded
Provenance tagged inline · see methodology for the labeling system Key
Harvest signals

When to pick

Snow peas are ready when the pods are flat, bright green, and tender, before you can see the peas swelling inside, about a week after the flowers open. Pick every few days to keep more pods coming.Pick snow peas while the pods are flat, bright, and tender, before the seeds inside begin to swell, about a week after flowering. Harvesting every couple of days keeps the vines producing and catches the pods at peak sweetness.

Yield

What to expect

Each pea plant gives only a modest amount, so peas are grown in rows, not one at a time. A 10-foot row of snow peas gives about 3 to 4 pounds of pods over its picking weeks.Snow peas yield modestly per plant, so they are grown in rows or blocks rather than singly. Utah State puts a snow or snap pea crop at about 3 to 4 pounds of pods per 10 feet of row over its cropping window; a trellised double row in a small bed gives a steady picking for several weeks.

Snow peas crop for a few weeks, then slow down as it heats up. Most of the harvest comes in that stretch, so planting a second short row a week or two later, and a fall crop where it works, keeps peas coming longer.Snow peas come on over a few weeks and then decline as the weather warms. Most of a sowing's crop arrives in that window, which is why a couple of succession sowings a week or two apart, and a separate fall crop where summers allow, are the way to stretch the supply. Snow peas are a great first-year crop. You plant the seed straight into cool spring soil, and in about two months you are picking flat, sweet pods. The main things that affect your harvest are planting early before the heat, giving the vines a trellis, and picking often while the pods are flat.Snow peas are a rewarding first-year crop: cold-hardy seed sown straight into early-spring soil, quick to a flat, sweet pod in about 55 to 70 days, and forgiving of cool weather. The main levers on yield are sowing early enough to beat the heat, giving the vines support, and picking often while the pods are flat.

What changes yield
Sowing early enough to flower and fill pods before summer heat (the spring crop is racing the heat; pods do not set above about 80°F)Steady moisture through flowering and pod fill (drought here aborts blossoms and toughens pods)Support for the vines (held up, peas crop better, stay cleaner, and resist mildew through better airflow)Regular picking (leaving mature pods on the vine signals the plant to stop flowering and ends the crop early)
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Pick your variety

Recommended varieties

These are snow peas, the flat kind you eat pod and all while the pods are still flat and the peas inside are tiny. They are different from sugar snap peas, which are plump and rounded and eaten when filled out. Oregon Sugar Pod II and Dwarf Gray Sugar are easy, dependable choices; pick a short bush type if you do not want to build a tall trellis.These are flat-podded snow (mangetout) peas, picked young while the pods are flat and the seeds barely formed. Do not confuse them with sugar snap peas, a separate edible-pod type bred for plump, rounded pods eaten whole once filled. Lean to powdery-mildew- and wilt-resistant varieties such as Oregon Sugar Pod II where those diseases recur, and match the variety's height to your support: bush types stand alone, tall types need a trellis.

Oregon Sugar Pod II
The standard home-garden snow pea: semi-dwarf vines around 30 inches, heavy yields of large flat pods, and broad disease resistance including powdery mildew and Fusarium wilt. The most widely recommended choice.
Dwarf Gray Sugar
Compact heirloom around 24 to 30 inches with attractive purple flowers; an early, space-saving snow pea that resists Fusarium wilt and suits containers and small beds.
Mammoth Melting Sugar
Tall climbing snow pea to 4 or 5 feet that needs a trellis; large, sweet, tender pods and Fusarium wilt resistance. Productive where there is room to support it.
Snowbird
Early, bush-type snow pea around 18 inches that bears pods in clusters of two or three for easy picking; a good quick, self-supporting choice.
Avalanche
Productive snow pea with large, sweet pods on semi-vining plants; appreciated for flavor and a reliable set.
Off the vine

Storing your harvest

Room temp
Do not leave snow peas out on the counter. They go limp and lose their sweetness quickly, so cool them soon after picking.Not recommended. Snow peas lose sweetness and crispness fast at room temperature and should be cooled promptly after picking rather than held on the counter.
Fridge
Cool the pods right after picking, then keep them in the fridge in a loosely closed bag. They stay good for about five days when kept cold and slightly damp; the longer they sit, the less sweet they get.Cool snow peas immediately after harvest to shed field heat, then refrigerate in a perforated bag. They hold good quality for about five days kept cold and humid, near 32 to 40°F at high humidity; the sugars convert to starch over time, so use them sooner rather than later.
Freezer
Snow peas freeze well for keeping longer. Give them a quick dip in boiling water (blanch), cool them, and freeze within a few hours of picking for the best result.Snow peas freeze well for longer storage. Blanch briefly to set the color and texture, cool, and freeze within a few hours of picking for the best quality.
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When something goes wrong

Common problems

Flowers fell off without making podsFlowers dropped or no pods set
01 of 04
What happened The plants flowered but made few or no pods, because it got too hot. Once it stays above about 80°F, peas drop their flowers instead of making pods, and the few that form are tough. This usually happens to a spring crop planted too late that runs into summer heat. It is a weather problem, not a disease.The vines flowered but set few or no pods, because the weather turned too warm. Once sustained temperatures pass about 80°F, peas abort their blossoms instead of setting pods, and any pods that form are tough and stringy. It is the classic fate of a spring crop sown too late, caught by early-summer heat, and it is a weather problem, not a disease. Next season Plant as early as you can work the soil so the peas flower and fill in cool weather, before the heat. Where summer comes fast, pick the quickest snow peas, and try a fall planting timed to finish as it cools down.Sow as early as the soil can be worked so the crop flowers and fills pods in cool weather, well before summer heat. Where summers come on fast, choose the earliest short-season snow peas, and add a fall sowing timed so the crop matures in cooling weather.
Seeds rotted or did not come upSeed rotted or came up poorly
02 of 04
What happened The seed went into cold, soggy soil and rotted instead of sprouting, or came up thin and patchy. Peas like cool soil, but wet, poorly drained ground rots the seed and lets soil fungi get to it. Planting too early into a wet bed is the usual reason for gaps.The seed was sown into cold, saturated soil and rotted before emerging, or came up as a thin, patchy stand. Peas tolerate cool soil, but waterlogged ground starves the seed of oxygen and feeds the soilborne root rots, so a too-early sowing into a wet, poorly drained bed is the usual cause of gaps. Next season Plant in well-drained soil or raised beds instead of cold, wet, low spots, and wait until the soil is workable, not muddy. Plant about 1 to 1.5 inches deep, do not keep the bed soggy, and soaking the seeds overnight helps them come up faster.Sow into well-drained ground or raised beds rather than cold, low, wet spots, and wait for the surface to be workable rather than muddy. Plant about 1 to 1.5 inches deep, do not keep the bed soggy, and an overnight presoak helps the seed get up and out of harm's way faster.
White powdery dust on the leaves and podsWhite powdery coating late in the crop
03 of 04
What happened A white to gray powdery dust spread over the leaves and pods as the weather warmed up and the nights stayed cool. This is powdery mildew, the classic late-season pea disease. It weakens the plants and spoils the pods, and it is hard to stop once it has spread.A white to gray powdery film spread over the leaves, stems, and pods as the crop ran into warm days and cool nights, the conditions that favor powdery mildew. It is the classic end-of-season pea disease; it weakens the vines, taints the pods, and is hard to stop once it has covered the foliage. Next season Plant a resistant variety, which works best (Oregon Sugar Pod II and many newer snow peas resist mildew), and plant early so the crop finishes before mildew weather arrives. Give the vines a trellis and room to breathe, water at the soil, and pull the old plants once the spring crop is done.Plant powdery-mildew-resistant varieties, the most effective step (Oregon Sugar Pod II and many modern snow peas resist it), and sow early so the crop finishes before the mildew weather. Give the vines a trellis and room for airflow, water at the soil, and pull a spent spring planting promptly.
Pods came out tough and stringyPods tough, stringy, or starchy
04 of 04
What happened The pods came out tough and stringy instead of flat and tender, usually because they were left on the vine too long, until the peas inside swelled, or because heat and dry soil hit while the pods were filling. Snow peas need to be picked young and go from tender to tough in just a few days.The snow pods came out fibrous and starchy rather than flat and tender, usually because they were left on the vine past their brief pickable window, when the swelling seeds toughen the pod, or because heat and drought stress hit during pod fill. Snow peas are a pick-young crop and go from tender to tough in a few days. Next season Pick every two or three days while the pods are still flat, before the peas swell, starting about a week after the flowers open. Keep the water steady while the pods fill, and plant early so they grow in cool weather, not heat.Pick every two to three days while the pods are still flat and bright, before the seeds round out, starting about a week after flowering. Keep moisture steady through pod fill, and sow early so the pods size up in cool rather than hot weather.
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The usual suspects

Pests & diseases

Pests
Pea aphid
P · 01
Symptoms Clusters of small, soft green insects packed onto the growing tips, flower stems, and undersides of the leaves. They curl and yellow the new growth and stunt the plants, and they leave a sticky residue. The bigger problem is that pea aphids spread virus diseases from plant to plant, so they are worth catching early.Colonies of soft, pinhead-sized green aphids clustered on the growing tips, flower stalks, and leaf undersides. Heavy feeding curls and yellows the new growth, stunts the vines, and can drop blossoms; a sticky honeydew and sooty mold may follow. Most important, pea aphids transmit the virus diseases of peas, including pea enation mosaic, so even modest numbers matter. Cause The pea aphid, a large green aphid that multiplies quickly in the cool weather of spring and fall when peas are growing. It builds up fast, before helpful insects like ladybugs catch up.The pea aphid (Acyrthosiphon pisum), a large green aphid that builds up fast in the cool, mild weather of spring and fall, exactly the seasons peas grow. It reproduces rapidly, so colonies form before natural enemies catch up. Organic treatment Blast the colonies off with a strong spray of water, or use insecticidal soap, which works on contact. Start as soon as you see them, while there are only a few. Ladybugs and other helpful insects usually finish the job. Since aphids spread viruses, it is worth dealing with them early.Knock colonies off with a strong spray of water, or treat with insecticidal soap, which controls aphids on contact; begin as soon as colonies are found, while numbers are low. Ladybugs, lacewings, and parasitic wasps usually bring populations down on their own. Because the real risk is virus transmission, act early rather than waiting for visible damage. Prevention Lay down reflective mulch, which confuses aphids and cuts the viruses they spread, and pull nearby weeds that shelter them. Do not overfeed with fertilizer, since the soft new growth is exactly what aphids like. Where pea viruses are common, plant a resistant variety like Oregon Sugar Pod II.Lay reflective mulch, which disorients aphids and reduces both feeding and virus spread, and control nearby weeds and clover that harbor them. Avoid overfeeding with nitrogen, which produces the soft, lush growth aphids favor, and choose virus-resistant varieties such as Oregon Sugar Pod II where pea viruses are a known problem.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Resistant varieties

    Where pea viruses are a known problem in your area, start at the seed rack. Oregon Sugar Pod II is one snow pea sold with virus resistance, and choosing it costs you nothing at planting time.The aphid's real cost on peas is what it transmits rather than what it eats, so variety choice is the step with the most leverage; Oregon Sugar Pod II carries virus resistance and is worth specifying where pea viruses have a local history.

  2. Reflective mulch

    Lay reflective mulch, a silvery plastic or foil sheet spread on the soil, while the plants are still small. It confuses aphids looking for somewhere to land, so fewer settle in and fewer viruses move around with them.Reflective film disorients incoming aphids, cutting feeding pressure and the virus spread that matters more here; lay it early while the crop is short enough for the film to still show.

  3. Clearing the weeds that host it

    Pull the weeds and clover growing near the bed. Aphids shelter in them and move across onto the peas from there.Nearby weeds and clover harbor pea aphids between crops, so clearing that ground before sowing and keeping the edges clean removes the bridge into the planting.

  4. Balanced nitrogen feeding

    Go easy on the fertilizer. Heavy feeding pushes out soft, sappy new growth, which is the growth aphids do best on.Overfeeding nitrogen produces the lush, succulent flush pea aphid colonies build on fastest, so hold the feeding back rather than pushing growth.

  5. Water spray

    Knock the clusters off with a strong jet from the hose as soon as you find them, while there are still only a few. It is the first thing to reach for, before any spray.A forceful water knock-down on the growing tips and flower stalks buys time while natural enemies catch up; given the virus risk, do it at first detection rather than waiting for visible damage.

  6. Beneficial predators

    Ladybugs, lacewings and tiny parasitic wasps (wasps whose young develop inside aphids) usually bring the numbers down on their own. Give them a chance before you spray anything.Ladybugs, lacewings and parasitic wasps usually pull pea aphid populations down unaided; the gap is early in the cool weather, when the aphid's reproduction outruns them, and that gap is what the physical steps cover.

  7. Insecticidal soap

    If colonies keep building, insecticidal soap works on contact, so it has to land on the aphids themselves. Spray while numbers are low and cover the growing tips, the flower stems and the undersides of the leaves.Soap kills on contact, so coverage of tips, flower stalks and leaf undersides decides the outcome; begin at the first colonies rather than after curling and yellowing have set in.

The bottom rungs are products with label rules: timing, pollinators, and days to wait before harvest. Before you spray →

Pea weevil
P · 02
Symptoms Little notches chewed out of the leaf edges of young plants, and beetles on the flowers in spring. The hidden damage is worse: the grubs tunnel into the peas forming inside the pods, leaving tiny round holes in the dried seeds. Holes in saved seed are the tell. The pea weevil eats only peas.Small notches chewed from the leaf margins of young plants in spring, and adults feeding on the blossoms. The real damage is hidden: larvae bore into the developing seeds inside the pods and feed there, leaving tiny round exit holes in the dried peas. Saved seed with holes is the giveaway. The pea weevil feeds only on peas (Pisum). Cause The pea weevil, a small brown beetle that feeds only on peas. The adults spend the winter in garden trash, move in when the peas flower to lay eggs on the young pods, and the grubs grow up inside the seeds. There is one generation each year.The pea weevil (Bruchus pisorum), a small brownish beetle whose host range is peas alone. Adults overwinter in debris and trash, move into the crop at bloom to lay eggs on young pods, and the larvae develop inside the seeds. There is one generation a year. Organic treatment Watch for the beetles while the peas are flowering, which is when they lay eggs. Picking them off and covering the plants with a light row cover at flowering both help. At the end of the season, check dried peas for tiny round holes before you save seed, and freezing saved seed for a few days kills any grubs inside.Monitor for adults during bloom, when egg-laying begins. In a home patch, handpicking and floating row cover over the crop at flowering reduce egg-laying. At season's end, inspect dried peas for the small round exit holes before storing seed; freezing saved seed for several days kills any larvae inside. Prevention Clear away and destroy the old pea plants after harvest so the beetles have nowhere to overwinter, and move your peas to a new spot each year. Do not save seed that has holes in it. Planting early so the pods finish before the beetles get busy also helps.Clean up and destroy pea debris after harvest to remove overwintering shelter, and rotate peas away from last year's bed. Do not save or replant seed showing exit holes. Where the weevil is established, an early sowing that finishes pod fill before peak adult activity escapes the worst.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Garden sanitation

    Clear out and destroy the old pea plants once the last pods are picked. The beetles sit out the winter in that debris, so taking it away leaves them nowhere to shelter.Adults overwinter in pea trash, so destroying the residue after harvest strips the shelter that carries the single annual generation through to spring.

  2. Crop rotation

    Move the peas to a different part of the garden each year instead of sowing them where last year's crop stood.Rotating off last season's pea ground puts distance between emerging adults and the only crop they can use, since this weevil's host range is peas alone.

  3. Timing the planting

    Where this beetle is established, sowing early helps: if the pods finish filling before the adults get busy, the crop slips past the worst of it.An early sowing that completes pod fill ahead of peak adult activity escapes the heaviest egg-laying; a timing lever rather than a control, and it depends on locally observed adult activity.

  4. Handpicking

    Watch the plants while they are in flower, which is when the beetles arrive to lay eggs, and pick off any adults you find on the blossoms.Scout at bloom, when egg-laying begins, and take adults off the flowers by hand; in a home patch that reduces the eggs laid on the young pods.

  5. Floating row cover

    Drape a light row cover over the planting once flowering starts, so the beetles cannot reach the young pods to lay on them.Cover applied at flowering excludes adults during the window when they move into the crop to lay on young pods; it is the exclusion half of the same bloom-timed step as handpicking.

No spray for this one. Prevention is the control.

Armyworms and cutworms
P · 03
Symptoms Cutworms cut off young pea seedlings right at the soil line overnight, so you find plants toppled over and gaps in the row. Armyworms are smooth caterpillars that chew the leaves and sometimes the pods, and they can show up in numbers. Both feed at night and hide during the day.Cutworms sever young seedlings at or just below the soil line overnight, leaving toppled plants and thinned rows in spring. Armyworms are smooth caterpillars that chew foliage and can move through a planting in numbers, skeletonizing leaves and nicking pods. Both feed mostly at night and hide in the soil or debris by day. Cause Several kinds of night-feeding caterpillars: cutworms and armyworms, the young of different moths. They come in from weedy or grassy areas, and young seedlings are the most at risk.Several night-feeding caterpillars, including cutworms (the larvae of various moths) and beet or western yellowstriped armyworms. They overwinter or move in from weedy ground and grassy cover, and seedlings are the most vulnerable stage. Organic treatment Pick the caterpillars off in the evening or early morning, and dig a little around fallen seedlings to find the curled-up cutworm. A collar of cardboard or foil around a seedling blocks cutworms, and a Bt spray controls young armyworms on the leaves. A light row cover keeps the moths from laying eggs.Handpick caterpillars in the evening or early morning, and check the soil around toppled seedlings for the curled cutworm. A cardboard or foil collar around a seedling stops cutworms; Bacillus thuringiensis (Bt) controls young armyworms on the foliage. A floating row cover keeps egg-laying moths off the planting. Prevention Clear weeds and tall grass before planting so the moths have fewer places to lay eggs, and turn the soil a couple of weeks before sowing to expose the grubs. Keep the edges of the bed weeded, and cover young seedlings with a row cover if these caterpillars are a problem where you are.Clear weeds and grassy cover before sowing to remove egg-laying sites, and turn the bed a couple of weeks ahead of planting to expose and dry out resident larvae. Keep row edges weed-free through the season, and protect emerging seedlings, the vulnerable stage, with a row cover where these caterpillars are a known problem.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Clearing the weeds that host it

    Clear weeds and tall grass out of the bed and along its edges before you sow, and keep the edges clean through the season. The moths lay eggs in that cover, so removing it takes out caterpillars before they hatch.These caterpillars move in from weedy and grassy ground, so stripping that cover before sowing and holding the row edges clean removes egg-laying sites right next to the crop.

  2. Off-season tillage

    Turn the bed over a couple of weeks before you sow. That brings the caterpillars already living in the soil up to the surface, where they dry out.Working the empty bed a couple of weeks ahead of sowing exposes resident larvae and dries them out; it is the one step that reaches the stage sheltering in the soil.

  3. Handpicking

    Go out at dusk or first thing in the morning, when they feed, and pick the caterpillars off. If a seedling has toppled, scrape the soil beside it and you will often turn up the curled cutworm that cut it.Both feed at night and shelter in soil or debris by day, so evening and early-morning scouting is when handpicking pays; a toppled seedling marks a larva resting in the soil beside it.

  4. Stem collars

    Slip a collar of cardboard or foil around each young plant so a cutworm cannot reach the stem at soil level. It is fiddly, but at the scale of a home row it works.A cardboard or foil collar set at the soil line blocks the cut itself, which is the damage that matters at the seedling stage; practical in a small planting.

  5. Floating row cover

    A light row cover over the seedlings keeps the moths from laying on the planting in the first place. Worth putting on from the start if these caterpillars turn up most years where you garden.Cover keeps egg-laying moths off the bed and protects the seedling stage, which is where the loss happens; the step to default to where cutworm or armyworm pressure is a known annual.

  6. Bacillus thuringiensis (Bt)

    Bt (Bacillus thuringiensis, a naturally occurring bacterium sold as a caterpillar spray) on the foliage controls young armyworms. Time it to small caterpillars, when the chewing first shows.Bt is the foliar answer for armyworms and works on early instars, so time it to the first chewing rather than to a stripped row; it is aimed at foliage feeders, not at cutworms severing stems at the soil line, which the collars cover.

The bottom rungs are products with label rules: timing, pollinators, and days to wait before harvest. Before you spray →

Thrips
P · 04
Symptoms Fine silvery streaks and pale flecks on the leaves and pods, with tiny dark specks, where the slender insects scrape the surface and feed. Bad infestations twist the new growth and leave scars on the pods. Thrips can also spread some viruses.Fine silvery or whitish scarring and flecking on leaves and pods, with tiny dark specks of excrement, as the slender insects rasp the surface and feed on the released sap. Heavy feeding distorts new growth and can scar pods cosmetically. Thrips also vector some plant viruses. Cause Thrips, slender insects much smaller than an aphid that build up in warm, dry weather toward the end of the pea season. They scrape the surface of the plant and feed on the sap.Several thrips species, slender insects a fraction the size of an aphid that build up in warm, dry stretches late in the pea season. They rasp the plant surface and feed on the sap that wells up. Organic treatment Peas usually shrug off a little thrips damage. If they build up, a strong spray of water and insecticidal soap knock them back, and helpful insects pitch in. Keep the plants watered and unstressed, since dried-out peas are more likely to be hit.Peas usually outgrow light thrips feeding without treatment. Where numbers climb, a strong spray of water and insecticidal soap reduce them, and natural enemies such as minute pirate bugs and lacewings help. Keep plants unstressed and well watered, since drought-stressed peas are more prone. Prevention Pull nearby weeds that shelter thrips, lay reflective mulch to confuse them, and keep the soil evenly moist so the plants are not stressed. Most home pea crops are done before thrips become a real problem.Control weeds that harbor thrips, lay reflective mulch to disorient them and reduce virus spread, and keep moisture even so plants are not drought-stressed. Most home pea crops finish before thrips become a real problem.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Clearing the weeds that host it

    Pull the weeds near the bed, since thrips shelter in them and move onto the peas from there.Weedy ground is where thrips hold and build before moving into the crop, so clearing it ahead of the warm, dry stretch late in the pea season removes the reservoir.

  2. Reflective mulch

    Reflective mulch, a silvery sheet laid on the soil, confuses thrips looking for the plants and cuts the viruses they can carry.Reflective film disorients incoming thrips and reduces virus movement; lay it at sowing while the crop is still small.

  3. Water spray

    If the numbers do climb, a strong spray of water knocks them back. Most home pea crops are finished before thrips reach that point.A forceful water knock-down is the first response where numbers climb; on a spring crop the season usually ends before thrips reach a level that justifies more.

  4. Beneficial predators

    Minute pirate bugs, lacewings and other helpful insects pitch in on their own, and light feeding usually needs no treatment at all.Minute pirate bugs and lacewings work this pest unaided in most seasons, and peas generally outgrow light feeding, so the bar for intervening should stay high.

  5. Insecticidal soap

    Where thrips do build up, insecticidal soap reduces them. It works on contact, so aim at the new growth, where the twisting and scarring show first.Soap backs up the water knock-down where numbers keep climbing; contact-only, so coverage of the distorted new growth and the silvered pods decides it.

The bottom rungs are products with label rules: timing, pollinators, and days to wait before harvest. Before you spray →

Diseases
Powdery mildew
D · 01
Symptoms A white to gray powdery dust that starts as spots on top of the leaves and spreads over the leaves, stems, and pods. The leaves yellow and dry out, the vines weaken, and the pods can be spotted. It is the classic late-season pea problem, showing up as the weather warms and dries toward the end of the spring crop.A white to grayish powdery coating that starts as small spots on the upper leaf surfaces and spreads to cover leaves, stems, and pods. Affected leaves yellow and dry, vines lose vigor, and pods may be spotted or off-flavored. It is the classic late-season pea disease, arriving as the spring crop runs into warmer, drier weather. Cause A fungus (Erysiphe pisi) that thrives in warm days, cool nights, and dry leaves, which is exactly the weather at the end of the pea season. It spreads on the wind and moves fast once it starts, so catching it early and planting resistant varieties matter most.The fungus Erysiphe pisi, favored by warm days, cool nights, and dry foliage, the conditions that arrive late in the pea season. Spores spread on the wind, and the disease moves fast once established, which is why early control and resistant varieties matter most. Organic treatment Powdery mildew is easiest to handle the moment you first see it; once it covers the leaves, it is hard to stop. Pick off the worst leaves and open up the planting for airflow. A sulfur spray started early and repeated per the label helps. If the spring crop is nearly finished, the simplest move is to pick what is ready and pull the plants.Powdery mildew is best managed at the very first signs; once it covers the leaves and yellowing sets in, control is difficult. Remove the worst-affected leaves and improve airflow. Sulfur or a labeled biofungicide, begun early and repeated per the label, suppresses it. On a spring crop that is nearly done, harvesting promptly and pulling the planting is often the practical choice. Prevention Plant a resistant variety, which is the best defense: Oregon Sugar Pod II and many newer snow peas resist powdery mildew. Plant early so the crop finishes before the mildew weather arrives, give the plants room and a trellis so air moves through them, and stay out of the patch when the vines are wet.Choose resistant varieties, the single most effective step: Oregon Sugar Pod II and many modern snow peas carry powdery mildew resistance. Sow early so the crop finishes pod fill before the late-season mildew weather, give plants room and a trellis for airflow, and avoid working among wet vines.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Resistant varieties

    Start with a resistant variety. It is the strongest single move against this one: Oregon Sugar Pod II and many newer snow peas carry powdery mildew resistance.Resistance is the highest-leverage step here, since the disease moves fast once established and the window it arrives in is short; Oregon Sugar Pod II and many modern snow peas carry it.

  2. Disease-escape sowing

    Sow as early as the ground can be worked so the crop finishes before the mildew weather arrives, which is this crop's guidance along with the resistant variety this ladder starts with. Mildew tends to build late, so an early sowing simply finishes ahead of it; this method's cautions carry the cold-soil trade that comes with the early date.An early sowing lets the crop finish pod fill before the late-season mildew weather, which is this crop's guidance, and it works because the pressure is seasonal: mildew builds late, and spring sowings mostly finish ahead of it. It sits beside the resistant varieties at the front of the ladder, a when beside their what. The early edge has its own cost in cold, wet soil, and this method's cautions carry it.

  3. Airflow and spacing

    Give the plants room and put up a trellis so air moves through the vines instead of sitting still in a dense tangle.Spacing and a trellis are set at sowing and cannot be retrofitted; an open, trained canopy is also what makes pulling the first affected leaves practical at all.

  4. Garden sanitation

    Pick off the worst leaves as soon as you spot the white dusting. If the spring crop is close to finished anyway, picking what is ready and pulling the plants is often the simplest answer.Stripping the most affected leaves early keeps the first spots from seeding the rest of the planting; on a spring crop near the end of its run, harvesting off and pulling the vines is often the practical call instead of a spray program.

  5. Biological fungicide

    A labeled biofungicide (a spray built on a living organism rather than a chemical) can suppress it if you start at the first spots and repeat as the label directs.A labeled biofungicide begun at the first colonies and repeated on label interval suppresses rather than cures; the value is entirely in starting before the leaves are covered.

  6. Sulfur

    Sulfur started early and repeated on the label schedule helps hold it back. Once the powder covers the leaves and they begin yellowing, spraying is unlikely to turn it around.Sulfur is the stronger of the two spray options here and works preventively: begun at first signs and repeated per label it suppresses, while a start made after the canopy is coated and yellowing is unlikely to recover the crop.

The bottom rungs are products with label rules: timing, pollinators, and days to wait before harvest. Before you spray →

Fusarium wilt
D · 02
Symptoms The lower leaves turn yellow and the yellowing creeps up the plant, which becomes stunted, curls, and wilts. If you cut the lower stem, the tissue inside is stained reddish or orange. Affected plants often die before making a crop. It shows up in patches and gets worse as the soil warms.A yellowing of the lower leaves that progresses up the plant, with downward curling, stunting, and wilting; a cut through the lower stem shows a reddish or orange discoloration of the water-conducting tissue. Plants often die before pod fill. Symptoms appear in patches and worsen as the soil warms. Cause A fungus that lives in the soil and enters through the roots, clogging the plant's plumbing. It survives in the soil for years and likes warm soil. Once it is in a bed you cannot get rid of it, so the answer is resistant varieties and moving your peas around.The soilborne fungus Fusarium oxysporum f. sp. pisi, which enters through the roots, plugs the vascular system, and persists in the soil for years. Several races exist. Warm soil favors it, and once a bed is infested the fungus cannot be eradicated, so resistant varieties and rotation are the management. Organic treatment There is no cure once a plant is infected; pull and throw away (do not compost) the affected plants. You manage this one by preventing it, with resistant varieties and rotation, not by spraying.There is no cure for infected plants; remove and destroy them to limit buildup. Management is preventive: the disease is handled through resistant varieties and rotation, not treatment. Prevention Plant a wilt-resistant variety, which most modern snow peas are (Oregon Sugar Pod II, Dwarf Gray Sugar, Mammoth Melting Sugar all resist it). Move your peas to a new spot on a three-to-four-year cycle, improve drainage, and avoid carrying infected soil from bed to bed.Plant Fusarium-resistant varieties, which are widely available (Oregon Sugar Pod II, Dwarf Gray Sugar, and Mammoth Melting Sugar all carry wilt resistance). Rotate peas on a three-to-four-year cycle away from infested ground, improve drainage, and avoid moving infested soil between beds.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Resistant varieties

    Plant a wilt-resistant variety. Most modern snow peas are, and Oregon Sugar Pod II, Dwarf Gray Sugar and Mammoth Melting Sugar all carry the resistance.Resistance is the primary management, since the fungus persists in soil for years and infected plants cannot be treated; Oregon Sugar Pod II, Dwarf Gray Sugar and Mammoth Melting Sugar all carry wilt resistance. Several races of the pathogen exist.

  2. Crop rotation

    Move peas onto different ground on a three-to-four-year cycle, so the bed where the wilt appeared gets a long break from peas.A three to four year rotation away from infested ground is the companion to resistance; it does not clear a fungus that persists for years, but it keeps a susceptible planting off the worst of the inoculum.

  3. Improve drainage

    Improve the drainage in the bed before you sow. It is one of the standard preventive steps for this wilt, and it does nothing for plants that are already infected.Drainage work is a preventive site step only; an infested bed cannot be cleared of the fungus, so nothing at this rung recovers a symptomatic plant.

  4. Garden sanitation

    Pull the affected plants and get rid of them rather than composting them. There is no cure once a plant is infected, and leaving it in place adds to what is in the soil.Roguing symptomatic plants and destroying them limits further buildup; it is damage control rather than treatment, since the pathogen is already resident in the bed.

No spray for this one. Prevention is the control.

Root rots and damping-off
D · 03
Symptoms Seeds that rot before they come up, and seedlings that flop over at a pinched, water-soaked spot near the soil. On bigger plants the roots rot, the vines stunt, and the lower leaves yellow and die. It is worst in cold, wet, poorly drained soil that makes the seed sit too long before sprouting.Seed that rots before emerging, and seedlings that damp off, collapsing at a water-soaked, pinched stem base. On older plants the root rot complex stunts the vines, yellows and kills the lower leaves, and rots the roots and lower stem brown. Damage is worst in cold, wet, poorly drained soil that slows germination and keeps seedlings vulnerable. Cause A group of soil fungi and water molds (including Pythium, Rhizoctonia, and Aphanomyces) that attack seeds, roots, and seedlings. Cold, soggy soil and damaged roots at planting let them in, and they build up where peas are grown too often in the same spot.A complex of soilborne fungi and water molds, chiefly Pythium, Rhizoctonia, Fusarium solani, and Aphanomyces euteiches. Cold, saturated soil and root injury at planting set the stage; Aphanomyces in particular builds up in beds cropped to peas too often and severe infections kill plants outright. Organic treatment There is no saving seed or seedlings that have rotted; replant once the soil is warmer and drains better. Pulling affected plants and improving drainage help, but the main thing is preventing it, since these organisms live in the soil.There is no rescue for rotted seed or collapsed seedlings; replant into warmer, better-drained conditions once the soil has dried. Removing affected plants and improving drainage limits further loss, but prevention is the real lever since the organisms are already in the soil. Prevention Plant in well-drained soil or raised beds instead of cold, wet, low spots, and never sow peas into soggy ground. Avoid damaging the roots when planting, move your peas around the garden on a three-to-four-year cycle, and clear away the old plants after harvest.Sow into well-drained ground or raised beds rather than cold, low, wet spots, and do not sow peas into waterlogged soil. Avoid root injury at planting, rotate peas on a three-to-four-year cycle to keep Aphanomyces down, and clear crop debris after harvest. Some varieties offer partial root-rot tolerance.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Improve drainage

    Sow into well-drained ground or a raised bed rather than a cold, low, wet corner of the garden. Soggy soil is what makes this one bad.Site and drainage carry most of the weight: cold, saturated ground slows germination and holds seedlings in the vulnerable window, which is where the Pythium and Aphanomyces end of the complex does its damage.

  2. Sound sowing practice

    Wait for the soil to warm and drain before you sow, and do not put seed into soggy ground. Handle the roots gently at planting, since damaged roots are an opening for these organisms.Sowing conditions decide this one: seed sitting in cold, wet soil is the setup, and root injury at planting is the second door in. There is no rescue for seed or seedlings that have already rotted, so a replant goes in once the bed has warmed and dried.

  3. Crop rotation

    Move peas around the garden on a three-to-four-year cycle. Growing them in the same spot year after year is what lets these organisms build up.The three to four year rotation is aimed at Aphanomyces in particular, which builds in beds cropped to peas too often and can kill plants outright where infection is severe.

  4. Garden sanitation

    Clear the old pea plants out of the bed after harvest, and pull affected plants during the season instead of leaving them in the row.Clearing crop debris after harvest and removing affected plants limits further loss, but the organisms are already resident in the soil, so this is containment rather than a fix.

  5. Resistant varieties

    Some varieties offer partial tolerance to root rot, so it is worth reading the seed description. Treat it as a bit of extra margin, not as something that carries the crop on its own.Partial root-rot tolerance exists in some varieties; take it as margin on top of drainage and rotation rather than a substitute for either.

No spray for this one. Prevention is the control.

Ascochyta blight
D · 04
Symptoms Brown to purple-black spots and streaks on the leaves, stems, and pods, sometimes with a blackened stem base. Sunken spots on the pods can carry the disease into the seed. It shows up in cool, wet spring and fall weather and rides in on infected seed and old plant debris.Brown to purplish-black spots and streaks on leaves, stems, and pods, often with darker margins; a blackening at the base of the stem (foot rot) in one form, and sunken lesions on the pods that can carry the fungus into the seed. It develops in cool, wet spring and fall weather and is carried on infected seed and debris. Cause A group of related fungi that survive on infected seed and on old pea plants left in the soil. Cool, wet weather and splashing water spread them. Once they are on the seed, they travel with it to the next planting.A complex of related fungi (the Ascochyta blight complex, including Ascochyta pisi and Mycosphaerella pinodes). The fungi survive on infected seed and on pea debris in the soil, and cool, wet conditions with splashing water drive infection and spread. Organic treatment You cannot cure tissue that is already infected; pull and throw away (do not compost) affected plants and all the old debris to slow it down. For a home garden, prevention does most of the work, since the disease travels on seed and old plants.There is no cure for infected tissue; remove and destroy affected plants and all debris to limit spread. Cultural control is the mainstay for a home crop, since the disease is seed- and debris-borne. Prevention Plant certified disease-free seed and do not save seed from an infected crop. Clear away all the old pea plants after harvest, and do not grow peas in that spot for at least three to four years. Water at the base, not overhead, and stay out of the patch when the vines are wet.Plant certified disease-free seed and do not save seed from an infected crop. Remove all pea debris after harvest and rotate peas off the ground for a minimum of three to four years before returning. Avoid overhead watering and working among wet vines, which splash and carry the fungus.
The control ladder

The ladder troubleshoots from the gentlest solution to the strongest. Start with the gentlest option and only move on when and if it doesn't work.

  1. Clean planting stock

    Buy certified disease-free seed, and do not save seed from a crop that had this blight. The fungus rides inside the seed, so a clean start matters more here than anything you can do later.The complex is seed-borne, so certified clean seed is the first control; saved seed off an infected crop reintroduces it directly, and the sunken pod lesions are the route the fungus takes into the seed.

  2. Garden sanitation

    Pull and get rid of affected plants, and clear every scrap of old pea debris after harvest instead of composting it. Nothing will bring infected tissue back, so removal is the job.Rogue affected plants and strip all pea residue after harvest; with no curative option and a debris-borne carryover, removal is the control.

  3. Crop rotation

    Once you have had it, keep peas off that ground for at least three to four years.A minimum three to four year break off infested ground is the debris-side half of the control, since these fungi carry over on pea residue in the soil.

  4. Water at the base

    Water at the soil rather than over the top of the plants. Drops hitting infected leaves splash the fungus onto clean ones.Overhead irrigation is a dispersal mechanism here; watering at the base removes the splash that carries the fungus from infected tissue to clean.

  5. Staying out of wet foliage

    Keep out of the patch while the vines are wet. Brushing past wet plants carries the fungus down the row with you.Working the planting while the foliage is wet moves the fungus by splash and contact, so when you trellis, pick or weed is itself a control decision.

No spray for this one. Prevention is the control.

Verified · 6 sources View
Seasoned
Where to plant next year

Crop rotation

Move your peas to a new spot each year, on about a three-year rotation, and longer if you have had disease trouble. Because peas feed the soil with nitrogen, whatever you plant there next will benefit.Rotate peas on a roughly three-year cycle, longer where Ascochyta blight or root rot have shown up. Their nitrogen-fixing habit makes them a good predecessor for nitrogen-hungry crops.

Family
Fabaceae (legume)
Years between
3 years
in the same bed
Avoid following
Do not plant peas where peas or beans grew last year. Diseases build up in the soil and hit the next crop. If you have had root rot or blight, wait even longer, up to four years, before peas return.Avoid following peas with peas or other legumes in the same bed; rotate to break the soilborne disease cycle (root rots, Fusarium, Ascochyta) that peas are prone to. Where Ascochyta or Aphanomyces root rot have appeared, extend the rotation toward four years.
Plant after
Peas are an excellent crop to grow before a heavy feeder. As a legume they fix nitrogen and leave the soil in better shape for a following crop such as a leafy green, a brassica, or corn.
Verified · 2 sources View
In the app · pre-launch

When plant taps you on the shoulder

The plant app sends a timely reminder at every critical moment of your snow peas season. The wording adjusts to whichever you pick: beginner or seasoned. Here are three you'll see in Zone 9.

p
plant
Last frost arrives
Time to plant peas Time to sow peas
Plant snow peas as soon as you can work the soil in spring, even weeks before the last frost, since young peas handle cold. Plant about 1 to 1.5 inches deep in moist, well-drained soil, and put up a trellis when you plant. Direct-sow snow peas as early as the soil can be worked in spring, well before the last frost; pea seedlings are cold-hardy. Sow about 1 to 1.5 inches deep into a moist, well-drained bed, and set up support at sowing.
p
plant
2 weeks after last planting
Plant your next row of peas Sow your next short row of peas
Snow peas give a crop over a few weeks, then slow down in the heat. Plant a new short row now, about two weeks after the last one, to keep peas coming. Stop early enough that the last batch finishes before it gets hot. Snow peas crop over a few weeks, then decline as the weather warms. Sow a fresh short row now, about two weeks after the last, to stretch the spring harvest. Stop in time for the crop to finish before summer heat sets in.
p
plant
8 weeks after planting
Start checking your snow peas every day Start checking your snow peas daily
Most snow peas are ready about 55 to 70 days from planting, about a week after they flower. Start checking every day and pick the pods while they are flat and tender, before the peas inside swell. Pick every two or three days to keep more coming. Most snow peas are ready about 55 to 70 days from sowing, roughly a week after flowering. Begin checking daily and pick the pods while they are flat, bright, and tender, before the seeds swell. Harvest every two to three days to keep the vines producing.
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Methodology & sources

Every date, temperature, spacing, and recommendation on this page is sourced from university cooperative extension publications, peer-reviewed agricultural research, NOAA climate data, and direct extension calendars. Where claims are softer (traditional gardening wisdom not formally documented), we say so.

Research-backed Documented in cooperative extension publications or peer-reviewed research
Well-grounded A known agronomic principle, but not formally tested for this specific pair
Traditional Time-tested gardening wisdom, limited formal research support
Last reviewed
June 29, 2026
Data version
crops_data_final · v1.0 · schema 2.9
Sources cited on this page
16 publications
Verified entries
Companion-planting claims tagged inline · zone dates verified against 5+ extensions
See all sources cited on this page
  • University of Minnesota Extension umn_ext
  • University of Maryland Extension umd_ext
  • Cornell Cooperative Extension cornell_ext
  • Iowa State University Extension iastate_ext
  • Michigan State University Extension msu_ext
  • NC State Extension ncsu_ext
  • Penn State Extension psu_ext
  • U. of Illinois Urbana-Champaign Extension uiuc_ext
  • UC Davis Postharvest Center ucd_postharvest
  • Texas A&M AgriLife Extension tamu_agrilife
  • Virginia Cooperative Extension 426-331 vce_426_331
  • Piedmont Master Gardeners piedmont_mg
  • UGA Vegetable Garden Calendar uga_calendar
  • Clemson Home & Garden Information Center clemson_hgic
  • UC IPM Statewide IPM Program uc_ipm
  • NOAA 1991-2020 Climate Normals noaa_normals

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Vol. 003 · Snow Peas · plant.lifestyle