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Black spots on service berry leaves #871433

Asked June 03, 2024, 10:03 PM EDT

Just about every leaf on both of my service berry trees have black spots on them. The tress still flower in the spring, but the foliage is definitely thinned out. First noticed this problem about 2-3 years ago. Please advise on how to treat. I love my beautiful trees!

Hennepin County Minnesota

Expert Response

Hi Jessica,

I'm not exactly sure what it is but, I think it's some kind of bacteria that took hold during the droughts of the past summers. Your trees were probably stressed from both drought and unusually  high temps. I think it's possibly Fire Blight.

https://hort.extension.wisc.edu/articles/serviceberry-amelanchier-spp/

https://extension.umn.edu/plant-diseases/fire-blight

I hope this helps,

Sally Granath

St. Louis County MG

An Ask Extension Expert Replied June 07, 2024, 3:54 PM EDT

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