Plant directly during the summer and autumn seasons, burying the seeds at a depth of 25mm and spacing them 15cm apart. Expect seedlings to emerge within 2-3 weeks when the temperature is maintained at 15-18°C. This hardy annual may benefit from minimal support to safeguard against unexpected windy conditions. Anticipate flowering within 90-100 days.

For September sowings, plant seeds directly in the flowering site at a depth of 2cm. For later sowings in October and November, use pots with five seeds in each, placing them in a cold frame. January sowings are recommended in a heated glasshouse, while March sowings should take place in a cold frame. Directly sow seeds to the flowering site in April. This comprehensive timeline ensures optimal growth and blooming success for your plants.