Hydrangea tree

Asked June 5, 2016, 10:43 AM EDT

I have a 1 year old hydrangea tree that has just developed spots on one set of leaves. I have attached a photo. Can you tell me what this is and if I can do anything for it. Thank you

Anoka County Minnesota

1 Response

The spots on the leaves are actually areas in which aphids have sucked out the 'green' in the leaves. Check the underside of leaves for tiny insects. A strong spray of water should dislodge them. If you have to, you can use an insecticide but it needs to be applied to the underside of the leaves.