Leaf Miners on Cannabis? (Tunnel-Making Larvae)
Leaf miner larvae tunnel between leaf surfaces, creating distinctive squiggly trails. Mostly cosmetic but can weaken plants.
Leaf miners on cannabis? Squiggly trails on leaves—see causes and analyze fast.
Common Causes
- Adult flies lay eggs on leaves
- Outdoor grows more susceptible
- Lack of beneficial insects
How to Tell Which One You Have
White/tan squiggly trails or blotches on leaves. Trails widen as larvae grow.
FAQ
Harmful?
Mostly cosmetic. Heavy infestations reduce photosynthesis and weaken plant.
Treatment?
Remove affected leaves, use neem oil, introduce parasitic wasps.
Prevent?
Row covers for outdoor, yellow sticky traps, beneficial insects.