Good Morning Lawson, 

Thank you for cotacting the U of M Extension Service. 

The problem may be insect galls. 

Please click on the following link from the U of M Extension Yard and Garden website: 

https://extension.umn.edu/yard-and-garden-insects/insect-and-mite-galls This information discusses insect galls on leaves. This information states: 

• In most cases, galls are not numerous enough to harm the plant.

Here is another link: 

https://apps.extension.umn.edu/garden/diagnose/plant/deciduous/serviceberry/spotsorblotches.html

This includes information about potential pests of serviceberry. Please inspect the leaves and stems of your new plants to see if any of these issues might be present. 

Here is another link about growing serviceberry in Minnesota: https://extension.umn.edu/trees-and-shrubs/serviceberry 

Good Luck!

You are welcome!