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Apple tree #878150

Asked July 21, 2024, 4:51 PM EDT

Can you tell me what does this to the apples? Is it a bug or disease? Last year it had good apples, this year they are all bad and turned that way shortly after they went from flower to fruit.

Washington County Minnesota

Expert Response

Thank you for writing.
That is apple maggots. 
https://extension.umn.edu/yard-and-garden-insects/apple-maggot
https://hort.extension.wisc.edu/articles/apple-maggot-scourge-of-home-apple-production/
https://treefruit.wsu.edu/crop-protection/opm/am-control_waapple-growers/
personally, I prefer the bag method to prevent these. 
https://orchardpeople.com/how-to-get-rid-of-apple-maggots/
Steve Miles, Master Gardener, Hennepin County MN (I am a human being, not a bot nor AI). I am an avid gardener but am not a degreed or certified horticulturist or arborist. I am happy to receive follow-up questions if my responses are incomplete or unclear.  This is the University of MN' garden soil testing service.  https://soiltest.cfans.umn.edu/testing-services/lawn-garden This is guidance on how to find a tree expert.  https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional The Minnesota Landscape Arboretum is a wonderful place to see and learn about plants that grow in Minnesota. https://mngardens.horticulture.umn.edu/minnesota-landscape-arboretum Replied July 21, 2024, 5:28 PM EDT

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