Sow indoors from March-April and lightly cover with compost. Alternatively, sow directly outdoors after the danger of frost has passed in May. The seeds will benefit from being kept in the dark until germination. Germination will occur between 5-10 days at a temperature of 18-22c. Gradually acclimatise to outdoor conditions over 7-10 days before planting out. When seedlings are 2-3 inches high, transplant outside. Plant in a sunny location, in well-drained soil at a distance of 20-30cm apart. Leave the last flowers on the plant and these will self-seed for next year.
