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FIG.01 — Tomato hornworm, pestTap to enlarge
Plant part
Leaf · Fruit
P. persimilis
LABEL CHECK: Use only a prod…
PestProblem 16 / 32
Tomato hornworm
Symptoms
Large green caterpillars rapidly strip foliage; dark droppings and fruit chewing may be visible.
How to verify
Compare the photos above with the plant, and check the symptom description against the look-alike records below before acting. The source guide does not carry a separate laboratory verification note for this record.
Next step
Hand-pick when practical and conserve parasitized caterpillars. Use Bt for small larvae or a tomato-labeled product such as chlorantraniliprole, indoxacarb, spinetoram, or another locally registered option.
Active ingredients
emamectin benzoatespinetoramchlorantraniliproleindoxacarbmethoxyfenozidepyridalylBacillus thuringiensis
Organic active ingredients
bacillus thuringiensis
P. persimilis: allowed / avoid
LABEL CHECK: Use only a product whose local label includes tomato and the target caterpillar; rotate IRAC groups.
Label matters
Active ingredients below are examples, not universal prescriptions. Confirm the diagnosis; use only products registered for tomato and the target problem in your country; and follow the current label for dose, pre-harvest interval, worker protection, compatibility and re-entry. Rotate IRAC/FRAC modes of action. When symptoms are uncertain, obtain a laboratory or extension diagnosis. Integrated pest management (IPM)—sanitation, resistant varieties, irrigation management, monitoring and biological control—should be the first line of defense.
Look-alikes to rule out
