Honeycrisp apples look perfect but have brown patches inside
A Houghton County Michigan resident has a small honeycrisp orchard and is finding that although the apples appear just about perfect on the outside there are small brown spots/patches on the inside with no insect/larva "tracks". There is absolutely no indication from the outer appearance that there is anything wrong with the apples but so far 100% of apples picked and sliced/opened have these little brown patches inside. The apple trees show no indication of disease or insect infestation. What are these brown spots? What causes them and how can they be prevented in the future?