Meyer Lemon Leaf Chewers: Caterpillars or Weevils?

Leaf Damage on Young Meyer Lemon in Redding, CA

One-year-in-ground Meyer lemon has 25 blossoms but leaves with chunks missing, curling, no visible bugs. Likely chewing insects—caterpillars, katydids, or citrus root weevil adults feeding at night.

Treatment Options

1. Bacillus thuringiensis (Bt) (Dipel, Thuricide): Biological, caterpillar-specific, zero pre-harvest interval. Safe for fruit.
2. Bayer Advanced Tree & Shrub (imidacloprid): Systemic, but not labeled for citrus fruit. Would require sacrificing first crop.
3. Night inspection with flashlight to catch culprits.

Bt is the best first choice for edible citrus. Reapply after rain.