Herb · Asteraceae
French Tarragon
Artemisia dracunculus
A pot in full sun with sharp drainage turns French tarragon into a summer-long source of warm anise flavor.
Full sun
Every 5–10 days
USDA 4–8
24–35 in · 60–90 cm
Overview
Few herbs earn a spot on the kitchen windowsill the way French tarragon does, all for one refined note: a clean, warm anise flavor that sets it apart on the plate. A relative of daisies and sagebrush, it settles in as a hardy perennial, fading back through winter before returning with fresh spring shoots. A single well-placed plant becomes a fixture of the summer kitchen for years.
There is a quiet exclusivity to the real thing. True French tarragon is a sterile clone that sets no viable seed, so it arrives as a living plant or a piece passed from one gardener to another, never from a packet. Whatever is sold as tarragon seed is the Russian sort, generous in size but thin on flavor. Bring home the genuine plant once, and it divides freely into gifts and new pots for seasons to come.
What tarragon asks for is a well-chosen spot rather than fussing. It wants full sun, lean soil, and very sharp drainage, and it turns sullen in heavy, wet ground. Give it the right position and it slips easily into a low-effort routine of light watering, almost no feeding, and a tidy cutback as the season winds down.
Care
The short version: a sunny spot with lean, fast-draining soil, watered only once the top half has dried. Keep feeding light or skip it, gather the shoot tips through summer, and divide the clump every few years to keep the flavor at its best.
Light
Set tarragon where it catches full sun, the surest way to a full-bodied flavor, and it will forgive a touch of afternoon shade. Tuck it into a dim corner, though, and the growth thins while the taste quietly slips away.
Water
Let the top half of the soil dry between waterings rather than keeping it damp, and the plant stays content. Soggy roots are its undoing, and overwatering through winter is the surest way to lose it to rot.
Soil
Give it light, sandy, well-drained loam, where crisp drainage counts for more than any richness. A pH of 6.0 to 7.5 suits it well, and heavy, waterlogged ground is the single setting it will not abide.
Temperature
Tarragon is resilient by nature, weathering cold to about -20°F (-29°C) and warmth to roughly 84°F (29°C). Its winter rest is part of the plant's charm rather than a flaw, since that cold pause is what readies it for the next season.
Humidity
It prefers the air on the dry side, around 30% to 50%, with a little space to breathe. Still, humid conditions are what usher in the mildew and rust that mark the leaves.
Feeding
This is a light feeder with modest tastes. A single spring serving of balanced fertilizer or compost is all it wants, and heavy nitrogen only coaxes soft growth with less of the flavor that matters.
Pruning
Pinch and gather the shoot tips through the season to keep the plant shapely and full rather than leggy. As late summer arrives, cut the stems back and clear the spent top growth before the plant settles for winter.
Repotting
Refresh a potted tarragon every 2 to 3 years, before the crown grows woody and crowded. Fading flavor, fewer new shoots, and a hardening center are the signs it is ready for fresh soil or division.
Size & spacing
In its prime the plant stands 24 to 35 inches (60 to 90 cm) tall and reaches 12 to 18 inches (30 to 45 cm) across, an easy scale for a bed or a generous pot. Leave each one that much room so air drifts through and the leaves stay dry.
When to plant
Suited to zones 4 through 8, tarragon keeps time with the seasons and fits neatly into the rhythm of a garden year. Set out divisions or rooted cuttings in spring once frost has passed, harvest the leaves across summer for the kitchen, and let the plant rest through winter, since that quiet dormancy is what returns it to form the following year.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Spring, after the last frost, from divisions or rooted stem cuttings
- Harvest: Rarely flowers and sets no viable seed; harvest leaves through summer. Benefits from a period of winter dormancy and chilling to perform well the following season.
Hardiness
USDA hardiness zones: 4–8
Temperature: down to -34°C
Troubleshooting
Tarragon rarely causes drama, and the few issues it does raise tend to gather around wet roots or crowded, airless growth. A little attention to both keeps a planting looking its best. Find the symptom below, then step in early.
A wilting plant over black, mushy roots and a spoiled crown
The trouble here is root and crown rot, and it almost always follows soil that has stayed too wet. Because tarragon cannot bear soggy roots, especially through winter, lift a failing plant and check for brown, foul-smelling roots. Where rot has set in, part with the worst of it and replant sound divisions in raised, sandy ground with sharp drainage.
Fix:
- Improve drainage and reduce watering
- Remove and discard severely rotted plants
- Replant healthy divisions in raised or sandy, well-drained beds
Yellowing, stippled leaves with powdery patches or small insects
Crowded, humid growth opens the door to downy mildew or rust, which leave pale or rust-colored patches, while aphids settle on the soft new growth and warp the leaves. A glance at the undersides tells them apart. Ease the plant open for airflow, remove the worst foliage, and rinse or treat any aphids at hand.
Fix:
- Improve air circulation and spacing
- Remove and destroy infected foliage
- Rinse off or treat aphids as needed
An aging clump turned woody, sparse, and short on flavor
By its third or fourth year a tarragon plant begins to fade with age, forming a hollow, woody center that offers little fresh growth and a flatter taste. This is simply time passing, not disease. Lift the clump in early spring, replant the lively outer pieces, and let the tired middle go.
Fix:
- Divide the clump in early spring
- Replant vigorous outer divisions
- Discard the spent woody center
Toxicity
Tarragon belongs to the easy, welcoming end of the herb world, safe to cook with and simple to keep in a shared home. It slips into everyday meals without concern, and it poses no poisoning risk to pets. The one note to keep in mind is that a large helping of the strongly scented leaves may leave a cat, dog, or other animal briefly unsettled, so it counts as a mild caution for pets rather than a worry.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds
Safe for
People
Cats Mild
A passing nibble does no harm, though a cat that eats a good share of the aromatic leaves may drool a little or feel briefly unsettled in the stomach.
Dogs Mild
Poisoning is not a concern, yet a dog that takes in a large helping of the strongly scented foliage might have loose stools or a touch of nausea that soon fades.
Horses Mild
A small taste passes without incident. A larger helping of the leaves can leave a horse with mild digestive upset for a short spell.
Rabbits Mild
Keep it to the occasional sprig, since the pungent oils can unsettle a rabbit's sensitive gut once it takes more than a small taste.
Livestock Mild
Grazing animals tend to skirt the strongly scented plant, and a casual mouthful amounts to nothing beyond a passing bout of stomach upset.
Birds Mild
A few leaves do a backyard bird no harm, though the concentrated aromatic oils make tarragon better as an occasional treat than a regular feed.
People Safe
For people, tarragon is a cherished kitchen herb, safe to eat in the measures a recipe calls for. Its estragole becomes a concern only at very large medicinal doses, far beyond the reach of everyday cooking.
No special handling precautions are needed for the intact plant; use the leaves as a culinary herb.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
United Kingdom
Animal PoisonLine: 01202 509000 (fee applies)
Australia
Animal Poisons Helpline: 1300 869 738
Varieties
Only two tarragons circulate, and the choice between them is the difference between a herb worth its place and one that merely fills a pot. A moment spent confirming which one you are buying is well repaid.
French tarragon ('Sativa' clone)
This is the tarragon that earns a place in fine cooking, a sterile clone of strong anise flavor raised only from divisions or cuttings because it never sets viable seed.
Russian tarragon (Artemisia dracunculoides)
Grown with ease from seed yet coarser, larger, and all but flavorless, it is the type that fills seed packets and then disappoints once it reaches the table.
How to propagate
Since true French tarragon never sets seed, it multiplies the way the nurseries manage it, by dividing a plant or rooting a cutting. Each approach carries the flavor forward untouched.
DivisionEasy
Early spring as growth resumes, or early fall · 4 to 8 weeks
Division is the most dependable way to increase the true French clone. Lift an established plant in early spring as growth returns, or in early fall, separate the strong outer sections, and replant them, doing so every 3 to 4 years to keep the clump fresh. The new divisions settle and take hold within 4 to 8 weeks.
Stem cuttingsModerate
Late spring to early summer from softwood growth · 4 to 6 weeks
Take cuttings from non-flowering softwood shoots in late spring or early summer and root them in a sharp, well-drained medium, where they establish in about 4 to 6 weeks. This carries the prized French flavor forward intact, since only the lesser Russian tarragon comes from seed.
Myths
True French tarragon can be started from a seed packet.
The appeal is understandable, but true French tarragon is a sterile clone that sets no viable seed, so its flavor survives only through division or a rooted cutting. Anything offered as tarragon seed turns out to be the inferior, nearly flavorless Russian type, a stand-in rather than the real culinary herb.