The leaves on my plum tree are all dying already. Some of the leaves curl up like a little knot. Is it diseased? It has quite a
lot of fruit on. Could you tell me what is wrong please? I have checked the leaves that are ok, and there are tiny little white mite like insects on the back of the leaf.
Certified GKH Gardening Expert
Can you include photos? Are you noticing webbing? If you see mites, then these are likely the cause.
This article will help in the meantime: https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm