Sow indoors, April-July, to flower the same year, 0.5cm (¼") deep, in a tray of compost. Water well and place in a cold frame or greenhouse. Seedlings usually appear in 14-28 days. Keep moist. Transplant to other trays, 5cm (2") apart, when large enough to handle. Always hold by a leaf, never by the stem. Gradually accustom young plants to outside conditions, before planting out to flowering positions in well-drained soil, August-October, 20cm (8") apart. Or, sow thinly, outdoors, May-July, in a seed bed, into finely-prepared, well-drained soil, which has already been watered. Thin seedlings to 5cm (2") apart, before planting out, August-October, to flowering positions. Flowers: October to June.
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