Onions Bolting (Flowering)
Flowering problem · common pattern reported by gardeners · verify locally
What you'll see
- Flower stalk shoots up
- Bulb stops growing
- Neck thickens
Most common causes
- Cold snaps after warm spell
- Oversized sets
- Stress (drought, transplant shock)
How to fix it
- Cut flower stalk immediately
- Use bulb promptly (won't store)
Prevention: Plant sets under 3/4 in diameter Harden off transplants Avoid early cold exposure
More Onion problems
Grow Onion with confidence
Open the Onion growing guide → · Planting calendar · Pest & problem diagnoser
ZoneFig content reflects widely published extension-service and gardening guidance. Symptoms and causes are common patterns, not a diagnosis for any individual plant — verify locally and treat conservatively.