Mastering Flowering Herbs: Basil, Cilantro, Oregano, and More

What to Do When Your Herbs Bolt

Flowering (bolting) changes an herb's flavor and signals the end of peak leaf production. Here's how to manage the most common culinary herbs when they send up flower stalks.

Basil & Cilantro (Coriander)

Both are annuals that bolt in heat. Cut flower stalks 2 inches below the bloom as soon as they appear. For cilantro, sow new seeds every 2–3 weeks for a continuous harvest. Provide morning sun and afternoon shade, and avoid overwatering—let rain do most of the work.

Perennial Herbs: Oregano, Thyme, Rosemary, Parsley

• Oregano & thyme: Cut back hard (like a carpet) to stimulate dense regrowth. They'll return next spring.
• Rosemary: Hardy varieties (Arp, Hardy Hill) survive below 10°F if protected from north winds. Tender types need winter protection.
• Parsley: Biennial; harvest leaves the first year, let it flower and set seed the second.

Universal Pruning Rule

Trim ⅓ of new growth on every branch every 3 weeks. This keeps plants productive, delays flowering, and improves air circulation. Dry cuttings in a brown bag, then blend and store in airtight jars away from light.

Recommended Resources

• Books by organic gardening experts
• HerbWorld.com for literature and nursery directories
• The Herb Companion magazine

Feed all herbs with organic liquid fish fertilizer (available at Home Depot, Lowe's) every three weeks for optimal health.