Tarragon should be planted in well-drained soil and in full sun where possible, although it will also cope with partial shade.
Whilst Tarragon is hardy it may not cope with the harshest of the British climate, and so from autumn onwards it is well worth protecting with some horticultural fleece, straw or deep mulch around the plant.
Dead stems should be cut back when the plant is dormant.
Tarragon is typically propagated by taking root cuttings in Autumn, or by division.
There are two main types of Tarragon commonly available; French Tarragon, and Russian Tarragon. Russian Tarragon is the more hardy of the two, so in the far north this may well be the best bet, however French Tarragon is considered far superior for culinary use, and for most parts of Britain I highly recommend you select this variety.
Tarragon is one of the best culinary herbs to grow. Its flavour is lost quickly so add towards the end of cooking… this is a key ingredient in béarnaise sauce.