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

Thyme

in Zone 9, this week

Thyme is a low, spreading herb with tiny fragrant leaves you cook with. It comes from the dry Mediterranean, so it wants full sun, poor dry soil, and very little water, and it actually does worse if you pamper it. It grows only about 6 to 12 inches tall and spreads into a low mat. Snip it often and give it a light trim after it flowers to keep it bushy; it gets woody as it ages, so replace or divide it every few years. It is tough and rarely bothered by pests, and bees love its little flowers. Thyme is a low, woody Mediterranean perennial in the mint family, grown for its tiny aromatic leaves that flavor soups, stews, sauces, meats, and fish. It forms a low, spreading, mat-like mound only about 6 to 12 inches tall and thrives on neglect in full sun and lean, sharply drained soil; wet, rich soil rots it and dulls its flavor. Frequent harvesting and a light shear after its summer bloom keep it bushy, though it goes woody with age and is best divided or replaced every few years. It is hardy and pest-resistant, and its small pink, lavender, or white flowers are a strong bee draw.

Thyme mature plant
Fig. 01 · Thyme, mature Zone 9
Container
2 gal
min 1 gal pot
Sunlight
Full sun
6-8 hrs daily
Water
Low
Spacing
8 to 12 in
between plants
Soil pH
6-8
slightly acidic
Today · in your zone

What's happening right now

October 21 · Zone 9 · Stage 01 · Plant out

Off-season for thyme 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 growing year

Your thyme year, month by month

Grown as a perennial CA: Interior Valley, Zone 9

Thyme loves this climate and comes back every year. Give it full sun, poor fast-draining soil, and not much water, and it will thrive as a low, spreading plant.Perennial, and well suited to this climate. Thyme is a Mediterranean plant that thrives in the warm, dry, sunny conditions of zone 9, overwintering easily as a low woody sub-shrub. Give it full sun, lean soil, and sharp drainage, and keep water infrequent.

Once established, lavender settles into the same rhythm year after year: a winter rest, fresh spring growth, an early-summer bloom you cut for fragrant bundles, then a hard cut-back that keeps the plant compact and flowering for years.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
▲ We are here
Thyme’s year
growing
bloom
prune
growing
Plant
plant
plant
BloomGrowingPrune
Plant
Oct - Nov or Jan - Mar
Bloom
May - Jul
Cut back after bloom Once the summer flowers fade, trim off the old flower stems and neaten the plant, cutting only into the leafy parts and not into the hard woody stems, which do not grow back well. Snipping thyme often plus this trim keeps it bushy, but it still gets woody with age, so replace or divide it every few years.After the summer flowers fade, shear off the spent flower stems and lightly reduce the plant, cutting into leafy growth only and never into the bare woody base, which resprouts poorly. Frequent harvesting through the season plus this post-bloom shear keeps thyme compact; even so, plants go woody with age and are best divided or replaced every few years.
The season, mapped

Seed to garden

The easy, reliable way to grow thyme is to buy a small plant, divide an existing clump, or root a cutting. You can grow it from seed, but the seed is tiny and slow and does not come up evenly, so most gardeners buy a plant instead. If you do start from seed, scatter the fine seed and barely cover it, and start indoors about 10 weeks before your last frost, keeping it warm and moist until it sprouts.Thyme is most reliably started from a nursery transplant, a division of an established clump, or a softwood cutting (cuttings root in about three to four weeks); it can be grown from seed, but the fine seed is slow and germination is uneven, so most gardeners skip it. Divide established plants in spring, and mixing the tiny seed with sand helps it spread evenly if you do direct-sow. To start seed indoors, scatter and barely cover the fine seed about 10 weeks before the last frost, and expect slow, uneven germination over two to three weeks.

  1. 01
    Plant out
    Oct - Nov or Jan - Mar
Start method
Nursery transplant
Soil temp
70-70°F
From seed to fruit

The growing journey

Stage 01 · Plant out
01
Plant out
A small, low bushy plant with tiny gray-green leaves and roots that hold the potting soil together when you slide it out.A compact young plant with fine gray-green foliage and firm roots filling the pot, ready to set out once frost has passed.
Gently loosen the roots, plant so the top of the rootball is level with the soil, and water once to settle it. Skip the fertilizer and rich compost.Loosen the rootball, set the crown level with the soil surface, and water in once to settle the roots. Do not amend with rich compost or fertilizer; thyme wants lean ground.
FROM PLANT · Thyme does best in poor, dry soil, so do not add fertilizer or rich compost. Give it your sunniest spot, and if your soil is heavy clay, plant on a little mound or raised bed so water drains away.Plant thyme lean and dry, not rich. Skip the compost-and-fertilizer routine, set it in the sunniest, sharpest-draining spot, and on clay build a mound or raised bed. Rich, wet soil weakens flavor and rots the roots.
FROM PLANT · Leave about 8 to 12 inches between plants. That space lets air move around each one, which helps prevent the leaf fungus thyme can get when it stays damp.Space plants 8 to 12 inches apart for airflow. Good air movement between plants is one of the simplest ways to head off the foliar fungus thyme can get in damp or humid conditions.
02
Establishment (year one)
New growth spreading low and wide as the plant fills in. Slow growth the first year is normal.Steady new growth low and outward as the plant begins to form a low, spreading mound. Light growth the first year is normal.
Water fairly often until the plant takes hold, then water less. Only snip a little, and do not feed it.Water until the plant is settled, then taper toward infrequent watering. Harvest only lightly, and hold off on fertilizer.
FROM PLANT · The first year is about growing roots. Water fairly often until it takes hold, then water less. Only pick a little this year. Thyme fills out by about year two.Year one is about roots, not harvest. Water until the plant is settled, then taper toward infrequent. Harvest only lightly this season; thyme reaches full size by about the second year.
FROM PLANT · Try not to feed it. Thyme needs very little, and too much fertilizer gives soft leaves with less flavor. The same is true for water, where more is not better.Resist the urge to feed. Thyme has low fertility needs, and over-fertilizing produces soft growth with weaker flavor. The same goes for water: more is not better.
03
Spring leaf-out and harvest
Soft new growth low on the plant in spring. That tells you it survived winter and is growing.New soft growth emerging along the stems and crown, signaling the plant came through winter and is growing again.
In early spring, once you see new growth and frost is over, you can lightly trim it to keep it neat. Start snipping sprigs to cook with, and water deeply but not often.Do any light shaping cut in early spring once growth resumes and frost has passed. Begin harvesting sprigs as needed, and settle into infrequent watering as the soil warms.
FROM PLANT · Once it is established, snip thyme often. Regular cutting keeps it bushy and slows it turning woody, and you can pick leaves anytime to cook with.Harvest little and often once the plant is established. Snipping sprigs regularly keeps thyme bushy and productive and slows it going woody; you can take leaves anytime for cooking.
FROM PLANT · If you want to tidy the plant, do it in early spring once new growth shows and frost is over. Cut only into the leafy parts, not the hard woody stems.Do any shaping cut in early spring once growth resumes and frost has passed. Cut into leafy growth, not the bare woody stems, which resprout poorly.
04
Bloom
Tiny flower clusters on the stem tips. For the best flavor, cut sprigs as the first flowers are just starting to open.Small flower clusters coloring up on the stem tips. For the best flavor and dried quality, harvest as the first flowers begin to open.
Cut thyme for drying as it starts to flower. Keep watering light and do not fertilize, since too much water or feeding dulls the flavor.Cut sprigs for drying as the flowers begin to open. Keep watering light and do not feed; over-watering and rich soil weaken the flavor.
FROM PLANT · For the best flavor, cut thyme to dry just before or as it starts to flower, when the oils are strongest. Cut in the morning after the dew dries.For the strongest flavor, cut thyme for drying just before or as the first flowers open, when the leaf oils peak. Harvest in the morning once the dew has dried.
FROM PLANT · You can leave some flowers for the bees, which love thyme blooms. To dry thyme, hang small bunches somewhere warm and airy, then store the leaves in a sealed jar.Let some flowers open for the bees if you like; thyme blooms are a strong pollinator draw. To dry thyme, hang small bundles in a warm, airy place, then store the stripped leaves sealed.
05
Shear back
Faded, brownish flowers and a plant done blooming. Notice the woody stems below the green; do not cut into those.Spent, browning flower stems and a plant finished with its main bloom. Below the leafy growth you will see bare woody stems; those are your no-cut zone.
Trim off the old flowers and neaten the plant, cutting only into the leafy parts and not into the hard woody stems. Frequent snipping plus this trim keeps thyme bushy, but it still gets woody with age, so replace or divide it every few years.Shear off the spent flowers and lightly reduce the plant, cutting into leafy growth only, never into bare wood, which resprouts poorly. Regular harvesting plus this shear keeps thyme from going woody; even so, plan to divide or replace it every few years.
FROM PLANT · After it flowers, trim off the old flower stems and neaten the plant, cutting only into the leafy parts, never the hard wood. Snipping often plus this trim keeps thyme bushy, but it still gets woody, so replace or divide it every few years.Shear off the spent flower stems after bloom and lightly reduce the plant, cutting into leafy growth and never into bare wood. Frequent harvest plus this shear keeps thyme compact, but it still goes woody with age, so divide or replace it every few years.
FROM PLANT · Do the main trim after it flowers, not in late fall. A hard trim just before winter can leave the plant weak, so wait until after bloom or early spring for heavy trimming.Time the main shaping after flowering rather than in fall. A late-fall hard cut can leave the plant vulnerable going into winter, so save heavy shaping for after bloom or early spring.
06
Dormancy (cold zones)
A plant that has slowed for the season. The hardy English and creeping kinds keep their leaves; less hardy types fade in hard cold.A plant that has slowed or stopped growing for the season. Hardy English and creeping types stay semi-evergreen; less hardy types decline in hard cold.
Stop watering and feeding, and save any big trim for spring. Shelter the less hardy types or bring potted plants somewhere protected. In very cold areas, good drainage and a sheltered spot help thyme survive.Stop watering and feeding, and leave any hard shaping for spring. Protect less hardy types or move container plants under cover. In the coldest zones, good drainage and a sheltered spot help thyme overwinter.
FROM PLANT · In winter, do almost nothing. Stop watering and feeding, and save the trim for spring. Thyme sitting in wet winter soil rots, so do not keep watering it.Over winter, do almost nothing: stop watering and feeding, and leave hard shaping for spring. A plant in wet winter soil rots, so the worst thing you can do is keep it watered.
FROM PLANT · Shelter the less hardy plants. English and creeping thyme are the toughest and can stay outside in cold areas if drainage is good and the spot is sheltered; grow tender types in pots you can bring under cover.Protect the less hardy plants. English and creeping thymes are the hardiest and overwinter outdoors through the cold zones with sharp drainage and a sheltered spot; grow tender types or cold-edge plants in pots you can move under cover.
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

Thyme likes poor, dry, gritty soil and full sun. That sounds backward, but it comes from the dry Mediterranean, so rich, damp soil actually makes it weak and rot-prone and dulls the flavor. If your soil is heavy clay, plant thyme in a raised bed or mound so water drains away fast, and skip the compost.

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
low
Spacing
8 to 12 inches
Soil pH
6 to 8
Container OK?
Yes · 1+ gal pot
Germination temp
70-70°F
In a pot

Yes, 1 gallon and up

Thyme does very well in a pot, partly because it likes the soil to dry out between waterings. Use a wide pot with holes in the bottom and a gritty mix, keep it in full sun, and tip out any water that collects in the saucer.Thyme is one of the best herbs for containers: it likes to dry out between waterings, which a pot does readily. Use a wide, free-draining pot with a gritty mix, keep it in full sun, and never let it stand in water. A pot is also the easy way to overwinter thyme where winters are too cold for it in the ground.

Pot size
1 gallon and up; 2 gallons is comfortable
Mature size
6 to 12 inches tall, 6 to 16 inches wide
Drainage
Drainage holes are a must. Empty the saucer after watering; thyme must never sit in standing water.
Watering
Pots dry out faster than the ground, so check the soil, but still let it dry between waterings and never leave the pot standing in a full saucer.
Depth and shape
At least 8 inches deep.
Self-watering pot
No. Self-watering containers keep the medium too consistently moist for thyme and promote root rot; use a conventional free-draining pot instead.
Mix
A coarse, free-draining potting medium; avoid peat-heavy moisture-retentive mixes. Add coarse sand, perlite, or fine gravel to sharpen drainage.
Feeding
Container thyme needs only a very light feed, if any; do not over-fertilize.
One to try

Lemon thymeA citrus-scented culinary hybrid with green or gold-variegated leaves; excellent with fish and poultry.

1 more compact type

English thyme

Winter

In the coldest zones, or with a less hardy type, grow thyme in a pot you can move into an unheated but sheltered spot for winter, then bring it back out in spring.Where the chosen type is not reliably hardy, a container lets you overwinter the plant under cover (an unheated garage or porch); keep it on the dry side and protected from hard freezes, then return it outdoors after frost.

Hardy to zone 4 in the ground; roots in a pot sit colder than that.

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 thyme

Preferred
6 to 8
Tolerated
6 to 8

Thyme is happy in soil that is neutral to a little bit chalky, about pH 6.0 to 8.0, and copes with slightly acidic soil too. It does not fuss over pH, so the main thing is to make sure the soil drains fast.Thyme grows well in neutral to slightly alkaline soil, roughly pH 6.0 to 8.0, and tolerates mildly acidic ground down to about 5.5. It is not fussy about pH as long as drainage is sharp; wet feet, not soil chemistry, is what limits it.

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Steady hand on the hose

Watering

When & how much
Frequency
Water deeply but not often. Water a new plant until it settles in, then let the soil dry out before watering again. An established thyme needs very little water. Pots dry faster, so check them, but still let them dry between waterings.Deep and infrequent. Water new plants until they are established, then let the soil dry between waterings; mature thyme needs little water and is quite drought-tolerant. Container plants dry faster and need checking, but should still dry out between drinks.
Amount
A regular soak for a new plant, then much less once it is established.Enough to settle new plants while establishing; once mature, only occasional deep watering in prolonged dry spells. Keep plants on the dry side to avoid root rot.
Method
Pour water at the base of the plant, not over the leaves, and let it dry out before watering again. Wet leaves and a soggy base are what make thyme rot.Water at the base and let the soil dry between waterings. Avoid wetting the foliage and crown, which invites rot in humid conditions.
Signs of trouble
Too much water
If leaves yellow and shoots wilt or die back even though you are watering, the problem is almost always too much water, not too little. Soggy roots rot.Yellowing leaves, wilting or dieback of whole shoots, and a plant that fails despite watering signal too-wet roots and likely root or crown rot, not drought. Flavor also weakens in soft, over-watered growth.
Too little water
Thyme almost never gets too little water once established. A little droop on a very hot afternoon that bounces back by morning is fine.Established thyme rarely shows true drought stress; light wilting in extreme heat that recovers overnight is normal and not a reason to increase watering.
Feeding rhythm

Feeding

Frequency
rarely
Type
None to minimal
When to start
At planting only

Thyme barely needs feeding, and too much fertilizer actually works against it. A little compost mixed in when you plant is enough, and after that you can usually skip feeding entirely. Feed it heavily and you get lots of soft leaves with weaker flavor.Thyme has very low fertility needs and is easy to over-feed. A little compost worked in at planting is plenty; established plants generally need no fertilizer at all. Over-fertilizing pushes soft, leafy growth at the expense of the concentrated oils that give thyme its flavor and aroma.

Lean soil, minimal feed

N/A. There is no fertilizer number to hit here, since the aim is to feed thyme as little as possible.N/A. Thyme is not fed by N-P-K targets; the goal is lean soil and minimal-to-no supplemental feed, so no fertilizer analysis applies.

Who grows well together

Companion planting

Plant thyme next to other plants that also like full sun and dry soil, such as rosemary, sage, oregano, and lavender. Many gardeners also tuck it near cabbage and its relatives, believing the scent helps keep pests away. Keep thyme away from plants that need a lot of water, because that wet soil will rot it. Thyme pairs naturally with other sun-loving, low-water Mediterranean herbs that share its lean, sharply drained conditions, such as rosemary, sage, oregano, and lavender; group these together so one dry, waterwise bed suits them all. Thyme is also a traditional companion in the vegetable garden, where growers have long planted it near cabbage-family crops in the belief its aroma helps deter cabbage pests. Keep it away from thirsty, rich-soil plants whose watering would rot it.

Other
Rosemary
Likes the same sunny, dry spot as thyme.Rosemary is a natural thyme partner because it asks for the same things: full sun, lean soil, and not much water. Grow them together and you can run one dry, waterwise bed rather than a watering compromise, which is exactly what keeps thyme from rotting at the roots. Both are woody Mediterranean herbs, so they age and look at home side by side. Traditional
Sage
Another sun-and-dry-soil herb that grows happily beside thyme.Sage wants the same dry, sunny, well-drained conditions as thyme, so the two share a bed with no fuss. Keeping them together means you water the whole group sparingly, which is what thyme needs to stay healthy. Both are tough Mediterranean herbs that shrug off heat and drought once established. Traditional
Oregano
Shares thyme's love of sun and dry soil.Oregano is a low, spreading Mediterranean herb that likes the same lean, dry, sunny spot as thyme, so the two make an easy, drought-tolerant pairing. Group them and you can keep the watering light for both, which is the key to not rotting thyme. They also look good together as a low, fragrant herb patch. Traditional
Lavender
Loves the same dry, sunny conditions and brings in pollinators.Lavender and thyme are classic dry-garden partners: both come from the Mediterranean and want full sun, sharp drainage, and very little water, so one lean bed suits them both. Both also draw bees and other pollinators when they flower. Plant them together in free-draining ground and resist the urge to pamper either. Traditional
Cabbage and other brassicas
A traditional pairing; many gardeners plant thyme near cabbage to help keep pests off.Setting fragrant thyme near the cabbage family is an old companion-planting habit, the idea being that its strong scent helps confuse or deter cabbage moths and worms. Treat this as grower tradition rather than proven fact. One honest caveat: cabbages want richer, moister soil than thyme's lean and dry ideal, so plant thyme at the dry edge of the bed rather than in the heart of it. Traditional
Keep apart from
Basil and other thirsty herbs Basil and similar moisture-loving herbs want steady water and richer soil, the opposite of thyme's lean, dry, sharply drained ideal. Grown together, the watering that keeps basil happy keeps thyme's roots too wet and invites rot, so give them separate conditions. Well-grounded
Provenance tagged inline · see methodology for the labeling system Key
Harvest signals

When to pick

You can snip thyme anytime once it is established: cut the top few inches of leafy stems, taking no more than about a third at once. The flavor is strongest just before and as it flowers, so that is the best time to cut thyme to dry. Cut in the morning after the dew dries. Snipping it often also keeps it from getting woody.Harvest thyme sprigs anytime once the plant is established: snip the top few inches of leafy growth, taking no more than about a third of the plant at once. Flavor is most concentrated just before and as the plant flowers, so cut for drying then, on a dry morning after the dew has lifted. Regular harvesting also keeps the plant from going woody.

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Yield

What to expect

A grown thyme plant gives you plenty of sprigs all season, enough to cook with fresh and to dry, especially once it is a couple of years old.A mature plant yields a steady supply of sprigs through the growing season, easily enough to keep a kitchen stocked with fresh thyme plus bundles to dry; productivity is best once the plant reaches full size at about the second year.

Do not expect much the first year. Picking lightly while the plant settles in gives you bigger harvests from year two.Expect only light harvests the first year; harvesting sparingly while the plant establishes pays off in fuller production from the second season on.

What changes yield
Plant age and size (full production at about the second year)Full sun and lean, sharply drained soilFrequent harvesting to keep growth soft and non-woodyType (upright culinary types yield more usable foliage than flat creeping ones)
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Pick your variety

Recommended varieties

There are a few kinds of thyme. English (common) thyme is the all-purpose cooking thyme, and French thyme is a milder version of it. German Winter thyme is a hardy, upright type. Lemon thyme tastes citrusy and is great with fish. Silver thyme is a pretty variegated type. Creeping thyme is a flat, spreading groundcover you plant between stepping stones; it is grown more for looks than for cooking. For cooking, pick English or French thyme.Thyme comes in several practical groups. Common or English thyme (Thymus vulgaris) is the standard broad-leaved culinary thyme, with French thyme a narrow-leaved, milder selection of the same species and German Winter a hardy, upright culinary selection. Lemon thyme (Thymus x citriodorus) adds a citrus note. Silver thyme is a variegated form grown as much for ornament. Creeping thyme (Thymus serpyllum, mother-of-thyme) is a flat, hardy groundcover used between pavers and as a lawn substitute, and is ornamental more than culinary. For the kitchen, start with English or French thyme; for a hardy groundcover, choose creeping thyme.

English (common) thyme
culinary + ornamental
French thyme
culinary
German Winter thyme
culinary
Lemon thyme
culinary (citrus)
Silver thyme
ornamental + culinary
Creeping thyme (mother-of-thyme)
ornamental groundcover
Off the vine

Storing your harvest

Room temp
Fresh sprigs last a few days standing in a little water on the counter. To keep thyme longer, dry it by hanging small bunches upside down somewhere warm and airy, then store the dried leaves in a sealed jar.Fresh cut sprigs hold for a few days in a glass of water on the counter. For long-term keeping, dry thyme: tie small bundles and hang them upside down in a warm, dry, airy place, then strip the leaves into a sealed jar out of the light.
Fridge
Keep fresh thyme in the fridge, loosely wrapped in a slightly damp paper towel inside a bag, for one to two weeks.Refrigerate fresh sprigs loosely wrapped in a slightly damp paper towel in a bag, where they keep for one to two weeks.
Freezer
You can freeze thyme: put whole sprigs in a bag, or freeze the leaves in water or oil in an ice-cube tray to drop into cooking later.Freeze whole sprigs in a bag, or strip the leaves and freeze them in water or oil in ice-cube trays for cooking; frozen thyme keeps its flavor well for months.
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From the garden to the kitchen

Recipes to try

Preserves & Condiments

Garden Herb Salt

Preserves & Condiments · 10m · Serves 20
Sides & Snacks

Honey Roasted Carrots

Sides & Snacks · 35m · Serves 4
Preserves & Condiments

Slow Roasted Tomatoes

Preserves & Condiments · 125m · Serves 6
More recipes
arriving with the harvest
When something goes wrong

Common problems

Leaves turning yellow or the plant dying backYellowing leaves or dieback
01 of 03
What happened For thyme, yellow leaves and dieback usually mean too much water, not too little. Overwatering and soggy soil are the biggest killer. The plant is drowning, not thirsty.With thyme, yellowing and dieback almost always mean too wet, not too dry. Overwatering and poor drainage are the number one killer, leading to root and crown rot. The plant is drowning, not thirsty. Next season Water much less and improve drainage. Use poor, well-draining soil in full sun, keep it on the dry side, and on heavy or humid ground plant on a mound. Never let it sit in soggy ground.Cut back on watering hard and fix drainage. Plant in lean, sharply drained soil in full sun, keep it on the dry side, and on clay or in humid areas use a mound or raised bed. Never let thyme sit in wet ground.
Woody and bare in the middleLeggy, woody, split-open center
02 of 03
What happened When thyme gets woody and bare in the middle, it is mostly just getting old. All thyme goes woody eventually; snipping often and trimming after bloom slows it down, but plants are best replaced or divided every few years.A thyme plant that has gone woody and bare or split open in the center is simply aging. Thyme goes woody with time even with good care; frequent harvest and a post-bloom shear slow it, but plants are best divided or replaced every few years. Next season Snip thyme often and trim it after it flowers, cutting only into the leafy parts. Every few years, split a healthy older plant or start a new one from a cutting so you always have a fresh, bushy plant.Harvest regularly and shear after bloom to keep growth soft, cutting into leafy growth only, never into bare wood. Divide a healthy older clump or start a fresh plant from a cutting every few years to keep a vigorous supply.
Not much flavor or soft, floppy growthWeak flavor or soft, floppy growth
03 of 03
What happened Thyme with little flavor and soft, floppy leaves usually has too much fertilizer or water, or too little sun. Thyme tastes strongest when it is grown lean, dry, and sunny.Bland thyme with soft, lush growth usually means too much feed, too much water, or too little sun. The concentrated oils that give thyme its flavor build up in lean, dry, sunny conditions and thin out in rich, wet, shady ones. Next season Stop feeding it, water less, and make sure it gets full sun. Poor, dry, sunny conditions give the best flavor, and picking just before it flowers captures the strongest taste.Stop fertilizing, water less, and give the plant full sun. Lean, dry, sunny conditions concentrate the oils and give the strongest flavor; harvesting just before bloom captures the peak.
The usual suspects

Pests & diseases

Pests
Spider mites
P · 01
Symptoms Tiny yellow speckles across the leaves, sometimes with a little fine webbing. It shows up in hot, dry weather and is usually minor, since thyme sees very few pests.Fine yellow stippling on the small leaves, sometimes with faint webbing, most likely during a stretch of hot, dry weather. Thyme carries about as light a pest load as any herb in the garden, so this is a weather-driven flare rather than a standing problem. Cause Very small sap-sucking mites, more closely related to spiders than to insects. They build up during hot, dry weather, and thyme is a plant they bother only occasionally.Tiny sap-feeding mites, closer kin to spiders than to insects, that flare in hot, dry weather. Thyme carries a light pest load and this is one of only a handful of pests any extension source reports on it. Organic treatment Wash them off with the hose every few days while the hot weather lasts. Use insecticidal soap only if there are a lot. In a long dry spell, give the plant one deep watering rather than letting it bake.Hose the mites off and keep repeating while the hot, dry weather lasts; step up to insecticidal soap only if numbers keep climbing. Water deeply through a long dry spell rather than letting the plant bake, but do not shift to frequent light watering. Prevention Grow thyme in full sun with space around each plant, and keep pots from baking dry in a heat wave. Mites turn up in hot, dry spells, so that is when to watch for them.Give plants full sun and room around them, and keep a pot from baking dry through a heat wave. The flare follows hot, dry weather, so the summer watering habit is the part to get right.
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. Even watering

    Thyme likes dry soil, but a plant left bone dry through a heat wave is the one mites take over. In a long dry spell, give it a single deep soak and then let it dry out again, rather than a splash of water every day.The lever is drought stress, not the moisture level itself: soak deeply during a prolonged dry stretch, then leave it alone until the ground has dried out. Frequent light watering would trade a mite flare for the root rot that actually kills thyme.

  2. Water spray

    Blast the mites off with the hose on a hard setting, working in under the sprigs as well as over the top. Thyme's stems are woody enough to take it, and you will need to repeat while the hot, dry weather holds.A thyme plant is a tough enough subshrub to hose forcefully, and repetition is what stops a colony rebuilding; the low, spreading habit means the water has to come in from the side to reach anything. Take the pass in the morning so the mat is dry by evening.

  3. Insecticidal soap

    If the speckling keeps spreading, reach for insecticidal soap, sold for exactly these soft-bodied pests. It kills only what the spray directly wets, so on leaves this small, work slowly and get in under the mat as well as over the top.Soap leaves no residual, so it only kills what it lands on, and on a dense low mat that means getting the nozzle in under the canopy. Skip it during a heat wave: it burns foliage on a plant already hot and short of water, which is exactly when mite numbers peak.

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

Aphids
P · 02
Symptoms Small soft bugs clustered on the stems and under the leaves now and again, usually where plants are crowded or growing soft and sappy in rich soil. Rarely a big deal on thyme.Occasional colonies of small soft-bodied insects on the stems and under the leaves, most likely where plants are crowded or have been pushed along with rich soil or fertilizer. Rarely a serious problem on thyme. Cause Small sap-sucking insects that show up now and then. They build up on soft, sappy growth, so thyme kept lean and dry gets fewer of them.Sap-feeding insects that turn up on thyme now and then. They multiply on soft, fast growth, which is why a plant on lean, dry ground sees fewer of them than a well-fed one. Organic treatment Wash them off with the hose, and pinch off any sprig that stays covered in them. Use insecticidal soap only if there are a lot.Hose the clusters off and pinch out any shoot that stays covered, then use insecticidal soap only if numbers keep building. Trimmings leave the bed; do not let them drop at the foot of the plant. Prevention Grow thyme in full sun with space around each plant, in poor dry soil, and go easy on fertilizer and water. Aphids go for soft, sappy growth, and lean soil is what keeps thyme from making any.Full sun, lean soil, room between plants, and restraint with the watering can. Lean ground helps because it does not push the soft, succulent growth aphids multiply on, not because a fast-growing plant fights them off; heavy feeding buys weak, sprawling stems and less flavor along with the aphids.
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. Balanced nitrogen feeding

    Feed thyme sparingly, or not at all. Extra fertilizer and rich ground give it soft, sappy new shoots, which is exactly what aphids breed on, and thyme is happier on poor dry soil in any case.Lean ground works by withholding the soft, succulent tissue aphid colonies need, not by making the plant tough enough to fight them off. Overfeeding buys weak, sprawling stems and weaker aromatic oils along with the aphids, so restraint costs nothing here.

  2. Garden sanitation

    Pinch off any sprig that stays covered and take it to the trash, not back onto the bed. On a plant this small, a few snips take out most of a colony.Removing weak and infested growth is the standard herb-bed answer, and on thyme it doubles as the light shaping the plant wants after flowering. The clippings should leave the bed, not land at the base of the plant.

  3. Water spray

    Thyme's low mat means the hose has to come in sideways: angle a firm spray up under the shoots and most of the colony goes with it, and few aphids climb back afterward.Thyme's wiry stems take a forceful jet that would flatten a seedling, so this is a real first move rather than a token one. Repeat as new clusters appear, and go in the morning so the canopy dries.

  4. Insecticidal soap

    If a colony holds on after a couple of hosings, insecticidal soap will finish it. It kills only what the spray actually wets, so cover the shoots properly instead of misting the top of the plant.This is the last step the problem should ever need on thyme, where aphids are reported as occasional rather than damaging. Soap leaves nothing behind, so predators arriving later are unharmed, and a repeat pass catches what the first missed.

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

Diseases
Root and crown rot
D · 01
Symptoms The leaves yellow and the plant collapses while the soil around it is still wet. This is what kills most thyme plants, and it comes from ground that stays too damp.Yellowing, wilting and dieback on a plant that only worsens the more it is watered. Wet, poorly drained ground is behind it, and it is the single biggest killer of thyme. Cause A rot in the soil that gets going where the ground stays soggy and drains slowly, killing the roots and the crown at soil level. Wet soil is the usual cause, and soil that is both wet and cold over winter can kill thyme in cold regions.Soilborne rots that get going in saturated, badly drained ground and destroy the roots and crown from below. Thyme is intolerant of wet feet and waterlogged soil is the usual cause, but cold is not ruled out: wet, cold soil over winter is a documented way Mediterranean herbs like thyme are lost, and winter injury on the woody stems is a separate risk after a hard winter. Organic treatment Once the roots and the base have gone soft there is no bringing the plant back, so dig it out and throw it away. What helps is drainage from the start, not a cure later on.Once the roots and crown are rotting the damage is not reversible, so lift affected plants out and destroy them; nursing one along does not work. Everything worth doing on this one is drainage, done before the fact. Prevention Give it fast-draining soil and full sun, water on the light side, and keep it out of ground that stays soggy. Where the soil is heavy clay, grow it raised or in a pot, and in humid areas pick one of the taller, leafier kinds rather than a low fuzzy one.Site it in sharply drained, lean soil in full sun, err on the dry side with water, and keep thyme out of ground that holds moisture. On heavy soil grow it raised or in a container of fast-draining mix, space plants so the ground dries between waterings, and in hot, humid regions favor the taller, smooth-leaved culinary types over the low woolly ones.
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

    This is a wet-soil disease with no spray behind it. What decides the outcome is where you put the plant: a slope, a raised bed, gravelly ground, or a pot with plenty of drainage holes, and never the low corner that stays damp after rain.Drainage is the whole control: nothing available to a home gardener saves a crown that is already rotting. Thyme will take poor, rocky ground that would starve most plants, so moving it or building the bed up beats trying to improve a heavy wet spot in place.

  2. Resistant varieties

    In a hot, humid region, pick one of the taller, smooth-leaved culinary thymes instead of a low, woolly creeping type: they cope with heat and damp air better. That is the plant coping with the climate, not beating the rot, so it belongs on top of good drainage and never in place of it.Thyme is a Mediterranean plant, and in humid regions the taller smooth-leaved species tolerate the heat and damp where the low woolly types struggle. This is tolerance of the conditions that bring the rot on rather than resistance to the organisms themselves, so it shifts the odds without settling them.

  3. Garden sanitation

    A plant whose roots and base have rotted will not recover, so lift it out and dispose of it rather than waiting to see. Clear the dead material away instead of leaving it lying under the neighbors.Take the loss out promptly and put the effort back into the site: overwatering and pooling do damage to an herb that is not reversible, so a collapsed plant is not something a change of watering habit rescues.

No spray for this one. Prevention is the control.

Verified · 8 sources View
Seasoned
Where to plant next year

Crop rotation

N/A. Thyme is not rotated like a vegetable because it is a permanent plant that stays put for years. If you replace an old one, pick a fresh, well-draining spot.N/A. Thyme is a perennial that stays in place for several years, so annual crop rotation does not apply. When replanting an old thyme patch, choose a fresh, well-drained site to avoid carrying over soilborne root rot.

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 thyme season. The wording adjusts to whichever you pick: beginner or seasoned. Here are three you'll see in Zone 9.

p
plant
Time to plant your thyme Time to plant out thyme
It is time to plant your thyme. Put it in a sunny, well-draining spot now that frost has passed, leaving 8 to 12 inches between plants, and do not add fertilizer. Your plant-out window is open. Set the nursery plant, division, or cutting in full sun in sharply drained soil after the last frost, spacing plants 8 to 12 inches apart. Skip rich compost and fertilizer.
p
plant
Time to trim your thyme Time to shear thyme back
Your thyme flowers are fading, so trim off the old flower stems and neaten the plant, cutting only into the leafy growth and staying above the hard woody stems. This keeps it bushy. Blooms are fading, time to shear off the spent flower stems and tidy the mound, staying above the woody base. Cut into leafy growth only. Regular harvest plus this shear slows the plant going woody.
p
plant
Get your thyme ready for winter Get thyme ready for winter
Winter is coming. Stop watering and feeding, save any big trim for spring, and shelter the less hardy types or bring potted plants somewhere protected. Soggy soil, not the cold, is what usually kills thyme. Cold is coming. Stop watering and feeding, leave any hard shaping for spring, and protect less hardy types or move container plants under cover. Wet winter soil, not cold, is the usual killer.
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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
July 2, 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 · Thyme · plant.lifestyle