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Question

Q

What is killing all the scrub oak and where can I find information on how to save the scrub oak I have that has not been affected by it yet?

Answer(s)

A

We have a fact sheet on Gambel oak (scrub oak) care available at
http://extension.usu.edu/files/publications/publication/HG-514.pdf. As
you can see, there are many insects and diseases that can affect and
even defoliate Gambel oak. Anthracnose might be what you have seen.
Also, in some years late hard frosts cause the new foliage to become
deformed or to die. I have heard of at least one report of that this
year. Either way, they almost certainly releaf and be fine. There is
nothing you need to do.

Posted on 5 Sep 2007

Michael Kuhns
Forestry Specialist

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