There’s an old joke: What’s worse than finding a worm in your apple? Finding half a worm. For an apple-tree-owner, worse still is finding a worm – or worm holes – in every single fruit on your tree.

Q. I’m a retired college professor. I garden organically with only moderate success. Most of the apples on my prolific tree have worm holes. Is there an organic strategy that would help? I cut around ...

Last year my apple tree produced a lot of small, wormy apples. What do I need to do to get larger apples without worms? If you want apples without worm holes, regular biweekly spraying is necessary.