Walnut tree pests!
I have two English walnut trees that are both around ten years old. I live in central California and the soil condition is compacted. There is grass covering the area surrounding the trees. Last year I noticed all the nuts had a small white worm inside them. What are my choices of pesticides both organic and chemical? Also I know the trees have anthracnose fungus what can I do to erradicate this problem? I appreciate any help. Leland