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tiny fingers growing on leaf #871541

Asked June 04, 2024, 2:15 PM EDT

I think it's a basswood tree and it has tiny reddish finger like things growing on some leaves. What is wrong? Can it be fixed?

Benton County Minnesota

Expert Response

The finger-like growths are galls caused by mites. The galls don't harm affected trees, so no control is recommended. The "damage" is primarily aesthetic.

Learn more here:

https://hortsense.cahnrs.wsu.edu/fact-sheet/lindentilia-leaf-galls/

An Ask Extension Expert Replied June 04, 2024, 4:17 PM EDT

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This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

tiny fingers growing on leaf #871541

Expert Response

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