Little bugs on the basswood trees?

Asked July 27, 2017, 12:23 PM EDT

We own a resort in Orr, MN and our grounds have many basswood trees. We recently noticed tiny little bugs on the leaves. We have never seen bugs like this before. They are eating the leaves. We don't know if this is related, but all around the trees on the ground is extremely sticky. We hope you can tell us what these bugs are, why they are showing up, and how we can get rid of them. Thank you!

St. Louis County Minnesota

1 Response

The insects shown in the photos are aphids. They excrete honeydew which accounts for the stickiness of things under the tree. The aphids will not be present much longer and they may not be so abundant next year. The following bulletin discusses ways to control them.
https://www.extension.umn.edu/garden/insects/find/aphids-on-deciduous-trees-and-shrubs/