Chilli

Chilli is the fruit of plants from the genus Capsicum, members of the nightshade family, Solanaceae.

Chili peppers originated in the Americas. After the Columbian Exchange, many cultivars of chili pepper spread across the world, used in both food and medicine.

Outdoors
Choose a sunny, sheltered site with well-drained, fertile soil.

Outdoors
Add a general-purpose fertiliser before planting.

Greenhouse
Grow in 23cm (9in) pots filled with compost or in grow bags with a maximum of 3 per bag.

Sowing
Raise seedlings under glass at 15-21°C (60-70°F). Sow two seeds in a compost-filled peat pot - remove the weaker seedling once they have both emerged. Plants may need to be re-potted in several stages before transplanting.

Outdoors
Harden plants off outdoors before transplanting.

Outdoors
Cover soil with a cloche two weeks before planting to warm the soil.

Upturn pots and retain the root ball. Transplant into pre-made holes the size of the pots and cover and firm the roots with soil. Leave 48cm (18in) between plants. Cover with cloches.

Aftercare
Mist plants to keep down red spider mite and encourage fruit to set.

Support once the stems grow tall enough.

Do not pinch out the growing tip as with cordon tomatoes.

Harvesting
Pick as required. Chillies will usually change colour as they ripen. The longer they are left on the plant, the hotter they tend to become.