Leaf roller on Hydrangeas


I have not cut away the damaged leaves, but is there a spray that I can use to discourage this to happen?


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Leaf roller or hydrangea leaf-tier or leaftier (Olethreutes ferriferanum) is the larva of a moth.  It affects several types of hydrangeas. For guidance on how to get rid of them, please see this previous Toronto Master Gardener post: