Apple tree

Question

The apples from our tree have brown areas throughout. What causes this and are they safe to use?

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Answer 1

If the apples already had the brown spots when they were picked, there are a couple things this could be, including bitter pit, cork spot, or white rot. This site has more information on these diseases.
https://extension.psu.edu/plants/tree-fruit/diseases/apple-diseases

If the apples were stored and then developed these symptoms, it could be due to improper storage conditions.