pest_control
Caterpillars on Walnut Tree
How to identify and get rid of caterpillars on Walnut Tree. Size: 5–50mm.
search
Identifying caterpillars on Walnut Tree
Larval stage of butterflies and moths. Highly variable in colour and size. Frass (droppings) present near damage.
cycle
Life cycle
Egg → caterpillar → pupa → adult butterfly/moth. Several generations per year depending on species.
warning
Damage to Walnut Tree
Chew leaves, stems, and fruit. Can defoliate entire plants rapidly.
healing
How to treat caterpillars on Walnut Tree
Hand-pick. Apply Bt (Bacillus thuringiensis) spray. Neem oil. Chemical insecticide for large infestations.
shield
Preventing caterpillars on Walnut Tree
Inspect undersides of leaves for eggs. Encourage birds and parasitic wasps.