Large tree needs help - Ask Extension
Moved into our home two years ago, these trees are on a berm behind the house. There’s a large oak behind them, which continues to thrive, but I am ...
Knowledgebase
Large tree needs help #879094
Asked July 28, 2024, 10:52 AM EDT
Moved into our home two years ago, these trees are on a berm behind the house. There’s a large oak behind them, which continues to thrive, but I am scared that we are losing these trees. Any thoughts on how to take care of them and get them back to health, or is it past that point and they need to come down?
Hennepin County Minnesota
Expert Response
Are the dying trees oaks? We can't tell because the photos lack the detail needed to be sure.
In any case, it's important to identify the trees and find out what's causing the dieback. Only then will it be possible to predict whether what's causing the decline is likely to affect other trees in the vicinity.
If the trees are all or mostly oaks, and wilt is present, all are at risk.
Based upon what we can see in the photos, we think the trees are past saving. However, that's a judgment best rendered by a certified arborist or other tree care professional.
The following publication discusses oak wilt and explains how to find and hire a qualified tree care professional:
https://extension.umn.edu/plant-diseases/oak-wilt-minnesota
In any case, it's important to identify the trees and find out what's causing the dieback. Only then will it be possible to predict whether what's causing the decline is likely to affect other trees in the vicinity.
If the trees are all or mostly oaks, and wilt is present, all are at risk.
Based upon what we can see in the photos, we think the trees are past saving. However, that's a judgment best rendered by a certified arborist or other tree care professional.
The following publication discusses oak wilt and explains how to find and hire a qualified tree care professional:
https://extension.umn.edu/plant-diseases/oak-wilt-minnesota
I was told that they are Ash trees
thank you for your response above!
Most ash trees in the Twin Cities area are infested by emerald ash borers. Borers kill untreated ash trees a few years after infestation. Virtually all dead and dying ash trees have been or will eventually be removed. Emerald ash borers do not harm oaks.
Learn more here:
https://extension.umn.edu/tree-and-shrub-insects/emerald-ash-borer
Learn more here:
https://extension.umn.edu/tree-and-shrub-insects/emerald-ash-borer
