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