French tarragon (estragon) care

Light

Most houseplants will scorch where french tarragon thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. 6 hours of direct sun. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for weekly watering for french tarragon, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Drought-tolerant once established; avoid wet feet.

Soil and pot

French tarragon grows best in free-draining sandy loam. Lean soil; pH 6.5-7.5. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

French tarragon sits happiest at around 40-70% (outdoor) humidity and 15-24°C (60-75°F). Outdoor humidity rarely matters. If you keep the room above 15 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed french tarragon sparingly. Compost in spring; minimal additional feeding. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on french tarragon in the Growli community. Each is annotated with the most common cause so you know where to start.

• Tired and woody after years — Divide every 3-4 years to refresh.
• Crown rot in wet soil — Plant on a slight mound for drainage.
• Russian tarragon takeover — Confirm you have French tarragon — seed-grown plants are Russian and tasteless.
• Yellowing leaves — Overwatering or too rich soil.
• Aphids — Rinse or use horticultural soap.

Companion plants

French tarragon pairs well with Aubergine, Tomato, and Pepper. These are species with similar light and water needs, so you can grow them in the same bed or container without conflict.

Propagation

Stem cuttings or division in spring; never seed for French tarragon. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

French tarragon is toxic to pets. Artemisia species contain estragole and thujone-related compounds. Considered toxic to cats and dogs in large amounts; culinary use is safe. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

French tarragon deep-dive guides

Every aspect of french tarragon care, each with its own calibrated guide:

• Common french tarragon problems & fixes
• French tarragon watering schedule
• French tarragon light requirements
• Best soil mix for french tarragon
• French tarragon fertilizing guide
• When to repot french tarragon
• How to propagate french tarragon
• How to prune french tarragon
• What's eating my french tarragon?
• French tarragon growth rate & size
• French tarragon cold hardiness
• French tarragon temperature & humidity
• Is french tarragon toxic to cats & dogs?
• Is french tarragon toxic to cats?
• Is french tarragon toxic to dogs?
• All 16 Artemisia varieties

Related guides

French tarragon is also commonly called French tarragon or estragon.

• East Indian Lemongrass care — light, water and common problems
• Roman Chamomile care — light, water and common problems
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• All 10153 plant care guides in the Growli library