Coriander provides fresh, aromatic leaves as well as useful seed from plants allowed to flower. It is best grown from direct sowings because it dislikes transplanting. Succession sowing and steady moisture are the keys to leafy plants that stay productive for longer.

When and how to sow

Sow direct from April in a weed-free, fertile bed or a deep container, covering seed lightly. Make small sowings every two or three weeks until late summer for a continuing supply. Choose a site with sun in spring and light shade in summer. 'Calypso' is a useful slower-to-bolt leaf variety. Avoid moving seedlings, as disturbed roots encourage premature flowering.

Care

Water regularly so soil remains moist, particularly during warm, dry spells, and remove competing weeds early. Thin dense seedlings lightly for stronger plants, using the thinnings in the kitchen. A little shade in summer helps delay flowering. Keep making new sowings instead of relying on one planting to provide leaves all season.

Common problems

Bolting is the main setback: plants flower quickly if sown too early, checked by drought or exposed to summer heat. Keep moisture even, use light shade and sow little and often. Slugs may eat emerging seedlings, especially on damp allotments. Inspect regularly and protect vulnerable young plants with physical barriers where needed.

Harvest

Snip individual outer leaves once plants are established, taking only a portion from each plant so fresh growth continues. For seed, choose a few healthy plants to flower and let the seed heads dry on the plant. Cut them on a dry day, finish drying indoors, then rub out and store the seeds.

Growing Coriander: frequently asked questions

When should I sow coriander in the UK?

Sow direct from April in a weed-free, fertile bed or a deep container, covering seed lightly.

What are common problems when growing coriander?

Bolting is the main setback: plants flower quickly if sown too early, checked by drought or exposed to summer heat.

When is coriander ready to harvest?

Snip individual outer leaves once plants are established, taking only a portion from each plant so fresh growth continues.

General guidance for UK home gardens and allotments. Reference figures are typical values; your exact timing depends on your region, last-frost date and variety. Page updated 19 Sep 2026.