A 500mm (18") high hardy annual suitable for growing in herbaceous borders, they generally flower from July till first frosts. Remove dead flowers to prolong the flowering period. Week 15; Sow seed in pots/ trays of seed compost and germinate at at a temperature of 20°-24°C (68°-75°F). alternatively; sow Week 20-22

Germination should take five to seven days.

Week 17; Prick off the seedlings into cell trays or boxes when large enough to handle.

Week 19; Place in coldframe to harden off until planting out time.

Week 21; Plant out 300mm (12") apart in a sunny well-drained location, although they will grow reasonably well in most soils and shaded positions.