Sow February to April on the surface of good, free-draining, seed
compost. Cover with a fine sprinkling of vermiculite. Place in a
propagator or seal container inside a polythene bag and place at 20-25C
(68-77F) until after germination which takes 10-21 days. Do not exclude
light as this helps germination.
Transplant seedlings when large
enough to handle into trays or 7.5cm (3in) pots. Gradually acclimatise
plants to cooler conditions for a few weeks before planting out after
all risk of frost, 23-30cm (9-12in) apart.