Disease or insect issue with Greenspire Linden trees - Ask Extension
I just found an issue with my Greenspire Linden trees. There are yellow cone-like spikes on some of the leaves, but not all of them. No other tree...
Knowledgebase
Disease or insect issue with Greenspire Linden trees #885208
Asked September 13, 2024, 9:02 PM EDT
I just found an issue with my Greenspire Linden trees. There are yellow cone-like spikes on some of the leaves, but not all of them. No other trees nearby, which are a Bradford Pear and a Maple, as well as a Japanese Lillac bush, have any such issues. Our area has been in a borderline drought for over a month, if that may have something to do with this issue. Attached is a picture of the issue.
Will County Illinois
Expert Response
These are galls caused by a mite. These gall-causing mites are often fairly host-specific, which is why you aren't seeing this on other species of trees in the area. They are a cosmetic issue and don't pose a threat to the overall health of the tree. You can read more about them here: https://hortsense.cahnrs.wsu.edu/fact-sheet/lindentilia-leaf-galls/.
