Sow indoors for surest results, February-April, 0.5cm (¼”) deep, in a tray of compost. Water well and place in a cold frame, unheated greenhouse, or on a warm kitchen windowsill. Keep moist. Seedlings usually appear in 21-42 days. Transplant, when large enough to handle, to individual pots. Always hold by a leaf, never by the stem. Gradually accustom young plants to outside conditions, before planting out into well-drained soil, July-October, 30cm (12") apart. Or, sow outdoors, April-July, in a seed bed, 0.5cm (¼”) deep, into finely-prepared, well-drained soil, which has already been watered. Keep moist and weed free. Thin seedlings to 5cm (2") apart, before planting out to flowering position in autumn. Flowers: July to August, the following year.
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