Woolly Apple Aphids / Root Pruning
I was digging around the roots of one of my apple trees and I noticed one of the tree has or once had a woolly apple aphids infestation and galls all over the place. So I pruned the surface roots off, they basically snapped like a dry twig. They didn't seem all that large either. Was this a bad idea? The tree seemed not as vigorous this year, the leaves smaller and not as green. Will new roots sprout? The tree is about 3 or 4 years old and an espalier.