Since my peach tree has peaches this year, I put a lot of attention on it. Yesterday, I found a lot of peaches having black spots. I only saw one spot on one peach at this moment. Then I touched it; it was hard on the black spot. Some black spot areas have a slightly black substance on the peach surface. I used a knife to open it, which was a big black area inside and found a worm (just looks like a white moth larva) inside. The worm was about 1 cm long and 1/4 cm big. What is it, and how do you control it?
Certified GKH Gardening Expert
It is likely plum curculio. This article will help: