Calypso
A slow-bolting coriander with useful leaf production in UK summers.
When to plant Coriander in Cardiff
Coriandrum sativum
A fast leaf herb for the UK garden. Sow little and often in a cool, sunny spot with moist, free-draining soil, and pick the leaves before plants run to seed.
50 cm · Full Sun · Moderate Water
Calibrated to Cardiff · last frost ≈ 22 Apr
| Activity | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow outdoors | No | No | No | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No |
| Harvest | No | No | No | No | Yes | Yes | Yes | Yes | Yes | Yes | No | No |
Growing guide
What to do through the growing season
01
Sow Seeds
8 Apr to 13 Sept Optional · repeat every 2 weeksSow thinly around 8th April - 13th September, cover . Sow a fresh batch every 14 days. Keep moist to germinate.
- In heat, give light shade and keep the soil evenly moist.
02
Thin Seedlings
22 Apr to 4 Oct Dates as each sowing reaches this stageAfter each sowing, thin to apart. Use the extras as baby leaves. Do not transplant them.
03
Keep Plants Tidy
8 May to 28 Oct Dates as each sowing reaches this stageAfter each sowing, from 8th May, take flower stems as soon as they appear if you want leaves. Pick often. Keep this up through 28th October.
04
Harvest Leaves
8 May to 28 Oct Dates as each sowing reaches this stageAfter each sowing, start picking from 8th May as soon as the leaves are large enough to pick. Keep cutting through 28th October.
- Late sowings can stand longer under a cloche.
Companion plants
Tap a plant to see why it works (or doesn't) with Coriander.
Plants to avoid
Why companion planting matters
Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.
Suggested varieties
Popular varieties of Coriander to consider
Santo
A compact, slow-to-bolt type that gives plenty of foliage for pots or small beds.
Leisure
A reliable leaf coriander that copes well with repeated cutting.
Confetti
Finely cut foliage with a milder flavour and strong leaf production.
Related plants
Explore similar plants you might like
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Calabrese
Sow indoors March, plant out May, harvest July to September. Frost risk October to April.
Coriander guides by town
See how Coriander timing shifts in other towns with different frost dates.