Cottonwood Trees
Q.

Tree Damaged By Car

Anonymous added on March 7, 2011 | Answered

Yesterday, a van rammed into the cottonwood (I think that's what it is) and the protective bark was sloughed off. What should be applied to the area to prevent bacteria or insects from hurting the tree?

A.
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Nikki
Certified GKH Gardening Expert
Answered on March 8, 2011

Unless the tree has been fully girdled (bark removed all the way around the tree), it is best to let the wound stay open. Applying anything on the wound can actually trap bacteria in the wound and cause more damage than good. This article will explain more and have some tips for cleaning the wound:
https://www.gardeningknowhow.com/ornamental/trees/tgen/repairing-tree-bark-damage.htm

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