Sow the seed directly into finely raked moist warm weed free soil where the plants are to flower 13mm deep Germination normally takes 10 to 14 days As the seedlings develop thin to achieve a final spacing of 30cm use any spare plants to fill spaces in the bed Alternatively for earlier plants sow on a windowsill or in a greenhouse at approximate 13 to 18 degree Celsius 3 or 4 seeds to a 7.5cm pot Plant out after careful acclimatization to outside conditions 10 to 15cm apart