How to Keep Cilantro from Bolting and Going to Seed

Plant cilantro in cool weather, harvest frequently, and succession plant every 2-3 weeks to maintain a steady supply of fresh leaves before the plants bolt to seed.

1. Start Cool, Stay Fresh. Start cilantro in cool weather when temperatures stay between 50-70°F. Plant in early spring or fall, avoiding hot summer months. In warm climates, grow cilantro through winter when temperatures are naturally cooler.
2. Find Your Shade Sweet Spot. Plant cilantro in partial shade during warmer months or morning sun with afternoon shade. Full sun is fine in spring and fall when temperatures are naturally cool. Good air circulation helps prevent bolting.
3. Plant Ahead, Harvest Forever. Sow new cilantro seeds every 2-3 weeks to ensure continuous harvests. Each planting will last 4-6 weeks before bolting, so overlapping plantings give you fresh leaves constantly. Mark your calendar to stay on schedule.
4. Pick the Right Variety. Select cilantro varieties bred for slower bolting like 'Slow Bolt', 'Long Standing', or 'Leisure'. These varieties tolerate heat better than standard cilantro and produce leaves longer before going to seed.
5. Keep Cutting, Keep Growing. Cut outer leaves regularly once plants reach 4-6 inches tall. Frequent harvesting delays flowering by keeping the plant in vegetative growth mode. Never harvest more than one-third of the plant at once to avoid shocking it into bolting.
6. Never Let It Dry Out. Water cilantro regularly to maintain even soil moisture. Drought stress triggers bolting as the plant rushes to produce seeds. Mulch around plants to retain moisture and keep roots cool.
7. Pinch Before It Flowers. Pinch off any flower buds the moment you spot them. This redirects the plant's energy back to leaf production and can extend harvest time by several weeks. Check plants daily during warm weather.
8. Block the Heat. Use shade cloth or plant taller crops nearby to shield cilantro from intense afternoon sun. Even 30% shade cloth can significantly reduce heat stress and slow bolting during warmer periods.