Sow outdoors, February-April, where they are to flower, 0.5cm (¼") deep, directly into finely-prepared, well-drained soil, which has already been watered. Seedlings usually appear in 14-28 days. Thin them to 15cm (6") apart. Water well until plants are established and keep weed free. Or sow indoors, April-May, 0.5cm (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. Transplant seedlings, 5cm (2") apart, to other trays when large enough to handle. Always hold by a leaf, never by the stem. Grow on in cooler, but not cold conditions. Gradually accustom young plants to outside conditions (avoid frosts), before planting out into well-drained soil, May-June, 15cm (6") apart, when frosts are over. Flowers: June to October.
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