Talk about devastation. Never seen a shrub stripped so quickly. Caterpillars have decimated this euonymus within about two days. Absolutely hundreds of them.Caterpillars are always a problem in summer, but never seen them on this shrub before. Strange. Never even seen any moths or butterflies.
Dusted thoroughly with 'Derris Dust'. Don't yet know if it has worked. They were not exactly falling off the shrub when I left it. Will have to check again tomorrow.
These pests (different species but still caterpillars) are also a problem on dahlias and geraniums.
Keep your eyes open. This unusually dry weather could cause all sorts of unexpected problems.
P.S.
No response to 'Derris' after two hours. Used 'Provado Ultimate Bug Killer Spray' for first time. This is the first liquid pesticide I have seen which will kill caterpillars. It is also systemic and long-lasting.P.P.S.
Think caterpillars are sawfly larvae. Was confused by black heads (thought they were orange). This certainly makes sense; they can devastate plants in days.
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