Coriander dhania leafy greens sowing season bolting prevention spacing harvest.
5 Answers
For leafy coriander, sow in the cooler months because heat and long days make the plant bolt to flower early and stop leaf growth. Split the round seed gently into two halves to speed germination, then broadcast or line sow in rows about 20 to 25 cm apart on a well prepared, moist bed and cover lightly. Keep the soil consistently moist with light frequent irrigation and harvest the leaves young, about 30 to 40 days after sowing, either by cutting once or by repeated clipping. Choose leaf type varieties suited to your season and avoid sowing in peak summer for leaf crop. For a seed crop instead, sow later so flowering coincides with cooler dry weather. Confirm locally suited varieties with your horticulture office.
Gently splitting the round seed into halves really speeds up germination. The whole seed I sowed earlier came up slow and uneven. After splitting, the seedlings emerged faster and the bed filled in better.
In the cool season I do repeated clipping instead of one cut, taking the outer leaves and letting the plant push new growth. It gave me several harvests from one sowing. In the warm season this does not work because the plant bolts no matter what.
Keep the bed evenly moist with light frequent watering. When I let it dry out between waterings the plants felt the stress and bolted to flower early, with small bitter leaves. Steady moisture in the cool months kept them leafy and tender for longer.
Pick a leaf type variety, not a seed type, if greens are your goal. I once sowed seed meant for the spice and it ran to flower quickly with thin foliage. The dedicated leaf varieties stay bushy and green much longer in the cool season.