White pine weevil has already started working; have you?

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Updated from an original article written by Dave Smitley, Michigan State University Extension, Department of Entomology.

This is one of the first insect pests of spring and needs your attention now.

White pine weevil is an early spring insect. The females hop to it as soon as the snow melts. If you have had “shepherds crook” damage to white pine leaders in the recent past, now is the time to spray white pines with permethrin, bifenthrin, cyfluthrin (pyrethroid insecticides) or dimilin (insect growth regulator) to prevent it from happening again this year.

Dimilin 25W is a nice alternative to the pyrethroid insecticides because it is relatively non-toxic, and easier on natural enemies. For more information, see previous article by Jill O’Donnell.

This article was published by Michigan State University Extension. For more information, visit https://extension.msu.edu. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464).

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