Cascading 30-40cm (12-16in)
Sow mid January to mid March. Sow seed on the surface of lightly firmed, moist seed compost in pots or trays, and cover with a very fine sprinkling of compost or vermiculite. Place in a propagator or warm place, and keep at a constant temperature of between 20-25C (68-77F). After sowing, do not exclude light as this helps germination. Keep the surface of the compost moist but not waterlogged; germination will usually take 3-21 days.
When large enough to handle, transplant seedlings into 7.5cm (3in) pots or trays. Gradually acclimatise plants to cooler conditions for a few weeks before planting out after all risk of frost into hanging baskets or containers spaced 10-15cm (4-6in) apart.
For best results, provide a light, well-drained soil in full sun.