These colorful summer flowering plants make excellent bedding and container displays, whilst the taller types make superb cut flowers.
Sow indoors, January-March. A warm kitchen windowsill is all you need for starting these seeds. Sow, 0.5 cm (¼”) deep, in trays of compost. Water well and place in a warm position. A temperature of 15-20°C (60-68°F) is ideal. Keep moist. Seedlings usually appear in 14-28 days. Transplant seedlings, 5 cm (2″) apart, to other trays when large enough to handle (always handle by a leaf and never by the stem). Grow on in cooler, but not cold conditions. Gradually accustom young plants to outside conditions (avoid frosts), before planting out, May-June, 20 cm (8″) apart, into well-drained soil, when frosts are over. Flowers: June-October.