Hemlock tree with white fuzz - Ask Extension
Hello, What do you think is going on with our hemlock tree?
Thanks,
Andrea
Knowledgebase
Hemlock tree with white fuzz #870528
Asked May 28, 2024, 10:20 PM EDT
Hello, What do you think is going on with our hemlock tree?
Thanks,
Andrea
Montgomery County Maryland
Expert Response
Unfortunately, that is an invasive insect pest called Woolly Hemlock Adelgid that has killed wide stands of Eastern Hemlocks.
Once it arrives it can kill a large tree within four years.
Here is our page on it:
https://extension.umd.edu/resource/hemlock-woolly-adelgid-trees/
We can't see for sure but at least the tree in the center looks like it is already in an advanced state of decline.
If you have others that aren't as affected you could contact a certified arborist to come and evaluate those trees. There are chemical controls that can be used that only licensed pesticide applicators can apply.
Most larger tree companies have ISA-certified arborists on staff or you can search for one at the credentialing agency at
http://www.treesaregood.org
Christine
Once it arrives it can kill a large tree within four years.
Here is our page on it:
https://extension.umd.edu/resource/hemlock-woolly-adelgid-trees/
We can't see for sure but at least the tree in the center looks like it is already in an advanced state of decline.
If you have others that aren't as affected you could contact a certified arborist to come and evaluate those trees. There are chemical controls that can be used that only licensed pesticide applicators can apply.
Most larger tree companies have ISA-certified arborists on staff or you can search for one at the credentialing agency at
http://www.treesaregood.org
Christine
