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Wilted branch - butterfly bush #872339

Asked June 09, 2024, 10:46 PM EDT

2-year old bush, south facing, irrigated bed. Any reason "why" this one branch would look wilted or dying?

Oakland County Michigan

Expert Response

Hello, 
From this photo it is hard to be certain, but I would suspect a stem borer of some kind.  Prune off the affected branch and take a closer look at the stem.  You will probably see the damage and possibly the larva doing the damage.  Since it seems pretty limited, I would not recommend treating at this time.
Ruth
An Ask Extension Expert Replied June 11, 2024, 4:05 PM EDT

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