A hardy annual that grows to around 500mm (18") high and flowers from July to September. Week 14; Sow seeds in trays of seed compost and germinate at a temperature 10° - 12°C (50°- 54°F) Germination should take three or four days

Week 16; Prick out seedlings into cell trays or boxes of potting compost 50mm (2") apart, then place in a cold frame to harden off.

Week 20; Plant out 300mm (12") apart in a sunny spot.

n.b. Avoid excessive feeding as this encourages leaf growth at the expense of flowers.