Sow in trays, pots, etc of good seed compost in a propagator or warm place to maintain an optimum temperature of 70-75F. Surface sow and do not exclude light. On germination, apply a light sprinkling of coarse gravel to help support the young seedlings and lessen dampening off. Prick out into 5cm pots, then 8cm and 15cm pots as required and water carefully until established.