Knowledgebase

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, (I am a volunteer human being: not a bot, not AI). I'm an avid gardener but not a degreed or certified horticulturist or arborist. I will do much better if you also send a photograph. I like follow-up questions.  The University' garden soil tests are excellent.  https://soiltest.cfans.umn.edu/testing-services/lawn-garden This is how to find a tree expert.  https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional  A Directory of ISA certified arborists is at https://certificates.directory.isa-arbor.com/  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  Ask a Master Gardener is a public service of the University of MInnesota's Extension Division.  Please donate if we make you happy.  https://give.umn.edu/gardener Replied July 21, 2024, 5:28 PM EDT

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