tarragon

When to plant tarragon?

Botanical name
Artemisia dracunculus
Family
Asteraceae

Tarragon is planted from April to June. It is harvested from April to October. It is cut back from March to April.

Tarragon is a perennial plant. The edible parts are the leaves and seeds.

French tarragon is not raised from seed. It is propagated by division and from cuttings, and the first plant is bought ready grown or comes as a piece from somebody who already has it.

In winter tarragon is harmed by water standing in the soil. The dead stems stand over the crown through the winter and shield it from the wet, so they are cut only in spring. Mulch laid over the crown for winter does the same job.

Estragole, methyleugenol and thujone are in every part of tarragon, including the leaves and seeds used in the kitchen. In kitchen quantities they are held to be safe for people.

tarragon
Photo: Kolforn · CC BY-SA 4.0

Tarragon through the year

JanFebMarAprMayJunJulAugSepOctNovDec
Planting
Harvest
Cutting back
15913172125293337414549
  • planting
  • harvest
  • cutting back

In short

Planting
from April to June
weeks 16 to 24
Spacing between plants
20 to 60 cm
Harvest
from April to October
weeks 14 to 40
Cutting back
from March to April
weeks 10 to 14
Renewal
every three years
Propagation
division and cuttings

Growing conditions

🪨
Soil
light and loamy
🧪
pH
6.5 to 7.5
☀️
Sun
full sun
💧
Water
little water
❄️
Frost
overwinters outdoors
🧣
Overwintering
mulched
🌱
Nutrients
a light feeder
📏
Height
30 to 90 cm
⚠️
Toxicity
in larger amounts, toxic to cats and dogs, toxic parts: roots, stems, leaves, flowers, fruit and seeds

Is tarragon toxic to cats and dogs?

In larger amounts, toxic to cats and dogs, toxic parts: roots, stems, leaves, flowers, fruit and seeds.

Pests and diseases

Listed here is every problem for which the sources name this plant as a host. The problems are not listed in order of how common they are.

Signs
A white, floury coating spreads over the leaves, first on the lower and older ones. The leaf under it yellows and dries up. The fruit stays small, because the plant loses leaf surface.
Prevention
Plant resistant varieties, leave an airy spacing and sun, and clear the debris at the end of the season. Unlike most fungi it is not helped by wet foliage, since it spreads in heat and high air humidity, in a dry summer too.
What to do
Oil products meant for powdery mildew on the squash family work on contact. They do not cure a leaf that is already affected, but they stop the spread to healthy ones. On herbs cut the affected shoots back instead, since the new growth comes clean. On ornamental perennials what is left is spacing and moisture.

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Related plants

The plants below are in the same botanical family (Asteraceae).

Sources about the plant: ASPCA Toxic and Non-Toxic Plants, Colorado State University Extension, GBIF Backbone Taxonomy, NC State Extension Plant Toolbox, Penn State Extension, Royal Horticultural Society, Utah State University Extension, Wikidata. Checked between 14 and 28 August 2026. The problem descriptions also draw on: Clemson Cooperative Extension, KGZS, UF/IFAS Extension, University of Maryland Extension, University of Wisconsin-Madison Division of Extension.