Jerusalem artichoke is not started from seed, but from tubers.
Buy them in March and April from a garden centre or online supplier.
Plant into well-prepared soil, planting at a depth of 10-15cm (4-6in) with tubers spaced 30cm (12in) apart. If you have an allotment or are particularly fond of Jerusalem artichokes, space rows 1.5m (5ft) apart.
Tubers can also be grown in a large tubs filled with good compost.
When stems are around 30cm (12in) tall, draw soil around them to a depth of 30cm 15cm (6in) to help stabilise plants as they grow.
‘Fuseau’: A large, smooth-skinned cultivar, that is easy to peel.
‘Dwarf Sunray’: Long, smooth skinned tubers.
Slugs and snails: These feed on the young seedlings and you'll see the tell tale slime trail on the soil around your crop, as well as on the leaves.
Remedy: There are many ways to control slugs and snails, including beer traps, sawdust or eggshell barriers and copper tape.
Sclerotina: When infected by this fungal disease, plants rot at the base and a white fluffy mould may grow on affected parts.
Remedy: This disease can remain in the soil for a long time, so immediately destroy any infected plants to prevent it from entering the soil. Do not compost the stems.