Sow seeds March to early April. Germinate at 20-30C (68-86F) on the surface of a good free draining, damp seed compost. Apply a fine sprinkling of vermiculite, just covering the seeds. Place in a propagator or seal container inside a polythene bag until after germination which usually takes 7-14 days. Transplant seedlings when large enough to handle into 7.5cm (3in) pots. For indoor crops Plant out into growbags or 20cm (8in) pots in the greenhouse. Ensure compost is evenly moist as flowers form. Give a weak general fertiliser as blossoms open and water well.