Caterpillars Eating Cannabis? (Leaf & Bud Worms)
Caterpillars chew large holes in leaves and burrow into buds, leaving frass and rot. Outdoor grows most affected.
Caterpillars eating cannabis? Holes and frass—see causes and analyze fast.
Common Causes
- Moths lay eggs on plants
- Outdoor grows exposed
- Lack of bird/wasp predators
How to Tell Which One You Have
Large irregular holes in leaves, frass (droppings) on leaves/buds, visible caterpillars, bud rot from tunneling.
FAQ
Remove by hand?
Yes, inspect daily and remove. Use BT (Bacillus thuringiensis) spray for larvae.
Bud damage?
Caterpillars tunnel into buds causing rot. Inspect buds carefully before harvest.
Prevent?
Row covers, BT spray preventatively, encourage birds and wasps.