How to grow Coriander Seeds
To grow coriander seeds, start by selecting a sunny location in your garden or a suitable container with a minimum depth of 20 cm. Prepare the soil by loosening it to a depth of about 30 cm and adding organic matter like compost to improve fertility and drainage. Ensure the soil pH is between 6.2 and 6.8 for optimal growth. Alternatively, sow coriander seeds indoors in a greenhouse or on a warm windowsill, and don't move plants outside until summer.
Sow the coriander seeds about 1 cm deep and 15-20 cm apart to allow enough room for the plants to grow. Lightly cover the seeds with soil and gently press down to secure them in place. Water the seeds thoroughly and keep the soil consistently moist but not waterlogged, especially during the germination period, which typically takes 7-21 days at temperatures between 15°C and 25°C.
Once the seedlings have grown to about 5-7 cm tall and have at least two true leaves, thin them to maintain the recommended spacing. This helps ensure each plant has sufficient nutrients, light, and air circulation. Regularly water the plants to keep the soil evenly moist, and provide at least 4-6 hours of sunlight daily.
Harvest the coriander leaves when the plants are about 10-15 cm tall, usually around 3-4 weeks after planting. Coriander plants are considered mature in approximately 60-90 days. Regularly harvesting the outer leaves encourages the plant to produce more foliage. If you want to harvest seeds, allow the plants to flower and form seed heads. When the seed heads turn brown and dry, collect them, dry the seeds thoroughly, and store them in an airtight container for future planting.