Honeycrisp Apple disease

Asked September 23, 2017, 3:04 PM EDT

Our Honeycrisp apples have developed a disease which looks like the photos of Soggy Breakdown, but is definitely present before the apples are harvested, not after storage. Another nearby private apple grower also has this problem with her honeycrisp this year. How can we learn what this is & how to treat it? The apples look beautiful until they start to develop bumpy surfaces & when cut open are rotting from the inside out, .

Todd County Minnesota apple diseases honeycrisp apple

1 Response

Thank you for the question. Since your apples exhibit problems before harvesting, and they are lumpy and rotten, it's possible they are afflicted with apple scab or apple maggot. Without good photos of the apple and the interior rot, these are the main culprits. Please refer to our publication on apple fruit deformity to learn more about these common problems:

If you think there is something else going on, please start at the beginning of our self diagnostic program "What's Wrong with my Plant"? http://www.extension.umn.edu/garden/diagnose/plant/ and review all the different common problems with apples and apple trees.

The following link might be helpful in learning about more diseases/pests and how to control them:

After reviewing the links provided and you have further questions, please resubmit your question including photos of the problem.

Thank you for contacting Extension.