Answer: It's difficult to control an insect pest without knowing what it is. That's because not all pesticides work against all types of pests and not all are safe to use in vegetable gardens or on fruit trees. Could be that snails or slugs are feasting on your veggie leaves. They feed at night so you might want to go out after dark and see if you can find the critters as they feed. If you find any, hand pick them or place traps near your plants so you can remove them from the garden each morning. If you don't find slugs or snails feeding you'll just have to put on your detective cap and keep inspecting your plants until you find out who is feeding on the leaves. As for the apple tree, you can use Bt (bacillus thuringensis) which is sold as Dipel. It targets caterpillars but won't harm beneficial insects. Best wishes with your landscape!
Q&A Library Searching Tips