For two seasons, when the leaves develop, leaf curl sets in and has damaged a viburnum shrub. It looks like grey aphids (?) may be causing this. Can I prevent it? How do I treat it?
Leaf Curl Problem on Viburnum
Certified GKH Gardening Expert
We have seen a lot of success with using neem oil on aphids. We would recommend that you try that. Here is more information that will help you: