Apple Tree Leaves

Question

I live in NJ. I have an apple tree. Tree leaves have yellow spots that turn into brown spots and underneath brown spots there are thorns. What’s that and how to treat?

Answer 1

For positive identification, take a sample of the leaves to your local agricultural extension office. It might be ''shot-hole'' disease, discussed in this article: https://www.gardeningknowhow.com/plant-problems/disease/shot-hole-disease-fungus.htm