Sow seed on the surface of a free-draining compost and cover with about 6mm (¼in) of compost or vermiculite. Place in a propagator at 18-21°C (65-70°F) until after germination which takes 7-10 days.
Transplant seedlings when large enough to handle into 7.5cm (3in) pots. Plant in the greenhouse in individual large pots, or 3 plants per growbag when 20cm (8in) high. Can be planted outdoors, 45cm (18in) apart once all frost risk has passed. Plants require sideshooting and support for the best yields. Water and feed plants regularly with a high potash feed once the first truss has set.