Honey crisp apple tree
This is the first year I got apples and none of them were any good. They look like they had some kind of borrowing bug. Can I leave the apples on the tree as they rot for birds to eat? They are really hard to pick. I was disappointed that we were not able to eat some of them!!
Mille Lacs County Minnesota
The trouble with leaving those apples on the tree is as they fall, the larvae of the insect will burrow into the ground only to hatch next year. It would be better to pick them and put them in the garbage. Your problem could be plum curculio, codling moth or apple maggot. Click on these pests on this publication: http://www.extension.umn.edu/garden/yard-garden/fruit/apple-pest-management/