Sow indoors late Feb to May. Keep soil damp but not soaked. If in seed trays, when large enough, transplant into 9cm pots and grow on in a cooler temperature. In May/June, when the plants are a good size, acclimatise them to outdoor temperatures for a week or so before planting out into the flower bed, patio pots or hanging baskets - preferably in a sunny position.
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