Cabbage Worms on Broccoli
Whole plant problem · common pattern reported by gardeners · verify locally
What you'll see
- Green worms on leaves and heads
- Chewed leaves
- Frass (droppings) in heads
Most common causes
- Imported cabbageworm butterfly lays eggs
- Cool spring and fall weather peak
- No row cover protection
How to fix it
- Hand-pick
- BT spray weekly
- Floating row covers
Prevention: Row covers from day one Interplant herbs Inspect heads before harvest
More Broccoli problems
Grow Broccoli with confidence
Open the Broccoli 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.