Sow indoors to flower the same year, February-April, 0.5cm (¼") deep, in a tray of compost. A temperature of 15-20°C (60-68°F) is ideal. Keep moist. Seedlings usually appear in 21-42 days. Transplant individually, when large enough to handle, to 7.5cm (3") pots (always hold by a leaf, never by the stem). Gradually accustom young plants to outside conditions, before planting out into well-drained soil, June-October, 45cm (18") apart, when frosts are over. Or, sow outdoors to flower the following year, May-July, 0.5cm (¼") deep, in seed trays or individual pots of compost. Pot seedlings on to larger pots if required, before planting out to flowering position, 45cm (18") apart, in autumn. Flowers: June-August.
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