Indoor sowing: Sow March-April 3mm deep in trays filled with good, moist compost. Keeping the tray watered, place in a warm, semi-shaded spot and keep temperatures around 20°C until they have germinated, which takes around 7 days. When large enough to handle, pot on into small 8cm pots and grow on at cooler temperatures. Gradually harden off before planting outside with 25cm spacing.
Outdoor sowing: Sow direct end April-May to flower July-September or August-September for early flowering the following year.
Growing instructions: Pick or deadhead regularly to extent the flowering season.