Viburnum beetle treatment - Ask Extension
I have a large Chicago viburnum (arrow pod?) bush that is getting eaten by those beetles again.
Can you tell me what I can apply now and if a syste...
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Viburnum beetle treatment #867347
Asked May 06, 2024, 9:54 PM EDT
I have a large Chicago viburnum (arrow pod?) bush that is getting eaten by those beetles again.
Can you tell me what I can apply now and if a systemic treatment is ok, and if so when to apply it. Obviously after the flowers are gone, but not sure when to apply. I read it can prevent beetles for a year or two.
I have insecticidal soap and neem oil on hand now. Flowers still at bud stage.
Washtenaw County Michigan
Expert Response
Arrowwood viburnum is highly susceptible to viburnum leaf beetle feeding.
A contact insecticide with any of the following ingredients is ok to apply: acephate, bifenthrin, carbaryl, cyfluthrin, deltamethrin, lambda-cyhalothrin, and permethrin.
Systemics can control the beetle but should be applied after flowering to prevent unintentional effects on pollinators.
For more information on Viburnum leaf betle: https://hort.extension.wisc.edu/articles/viburnum-leaf-beetle/
A contact insecticide with any of the following ingredients is ok to apply: acephate, bifenthrin, carbaryl, cyfluthrin, deltamethrin, lambda-cyhalothrin, and permethrin.
Systemics can control the beetle but should be applied after flowering to prevent unintentional effects on pollinators.
For more information on Viburnum leaf betle: https://hort.extension.wisc.edu/articles/viburnum-leaf-beetle/
