Spots in Liberty apples

Asked October 5, 2019, 3:34 PM EDT

I have a dwarf Liberty apple tree that I planted about five years ago. I do not use any sprays on it. The apples look perfect on the outside but have lots of small brown spots inside. What is causing them, and can I prevent them? Gaile Baack

Multnomah County Oregon

1 Response

That's hard to say for sure, but it could be apple maggot fly, aka railroad worm. Often the skin incursion can be hard to see. It could also be some kind of nutrient deficiency, but we rarely see that on Liberty. My bet goes with apple maggot fly. Trapping with red spheres might help: https://apples.extension.org/apple-maggot/