How to grow Coriander Seeds
Sow coriander seeds indoors in a greenhouse or on a warm windowsill, and don't move plants outside until summer. Or, plant outside when temperatures are 18 C or warmer.
Coriander likes a light, well-draining soil with some well-composted material. Cover seed lightly with fine soil and keep moist during germination. When the seedlings are about 5cm tall, thin and set plants outside when it is warm and after all danger of frost.
Harvest coriander seeds when the start to turn brown (usually around September). Germination takes about 7-21 days and plants mature in approximately 60-90 days.