Sow from late winter onwards indoor��s or heated undercover in fine compost 6mm (?in) deep.
Keep soil damp but not wet, sealing in a polythene bag after sowing is helpful. Germination in 7-10 days at 65-70F.
When large enough to handle, transplant to trays or individual 3in pots and grow on in cooler conditions.
Gradually acclimatise to outdoor conditions before planting out after all risk of frost, at 12-18in apart.
Prefers  good moisture retentive soil and full sun.