French tarragon

French tarragon (Artemisia dracunculus var. sativa) is a half hardy perennial herb that is native of southern Europe. It is fairly tender - which may be one of the reasons that it is not particularly widely grown - but it is easy to grow, and well worth it for its culinary uses.

French tarragon cannot be grown from seed as it reverts back to Russian tarragon.

Location
Choose a well-drained site in a sunny position.

Soil
If the soil is heavy, dig in peat or well-rotted manure or compost at the rate of a bucketful to 1m² (1yd²).

Planting
An average household should only require one plant, as French tarragon cannot be raised from seed you will need to acquire a cutting to plant.

Aftercare
Keep the plant well-watered during dry spells and pinch out any flowering stems as they appear to ensure a supply of fresh leaves.

Harvesting
Harvest leaves as required from June.

Long-term care
Tarragon will keep growing for years once established, however it is advisable to divide and replant old stock every two or three years. Dig up the plant in spring divide by hand (do not cut the underground runners). Replant 5-8cm (2-3in) deep and 40cm (15in) apart.

Preserving
Cut fresh tarragon and pack into ice cube trays and store in a freezer. Use cubes as required for a year-round supply.

Troubles
Tarragon is not troubled by many pests, but is susceptible to the following plant diseases: