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gatewood elementary, hopkins #946602

Asked October 06, 2026, 1:44 PM EDT

green spaces appeared with various black burnt looking spots on september 23…

Hennepin County Minnesota

Expert Response

We can't determine what's caused the black spots by viewing the photos.    

Possibilities include slime mold:

https://www.aces.edu/blog/topics/lawn-garden/slime-molds-on-home-lawns/

Fungal disease

Oil/chemical spill

To learn more about what might be causing the black spots, take or send samples of the affected vegetation to the University of Minnesota Plant Disease Clinic.

https://pdc.umn.edu/
An Ask Extension Expert Replied October 06, 2026, 9:00 PM EDT

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