From:Kyle, TX Region: Southwest Topic: Trees Title: Susceptibility of Shumard oaks to oak wilt Answered by: Dean Garrett
I have planted a red oak tree. I am still trying to locate the ID tag for the type. I planted it two or three years ago. I purchased the tree from either Lowes or Home Depot. Is there a type of red oak that is not susceptible to oak wilt? Shumard oak? A neighborhood 10 miles away has had oak wilt. Should I remove mine and consider a different tree for the neighborhood?
Unfortunately, red oaks are more susceptible to oak wilt than any other oaks. There is no red oak species that is immune to the disease. Once infected, a red oak will die faster from oak wilt than other oaks, usually within a few weeks as opposed to the few months it takes live oaks to succumb.
How various oaks become infected also differs. In live oaks connected by their roots in an area hit by oak wilt, the disease spreads at an average of 75 to 100 feet per year through the roots. With red oaks, the infection is almost always spread by certain flying insects to bark-damaged trees that may be far distant from the source tree, so rate of spread isn't as predictable.
As to whether to remove your tree or not, that's a hard question. There are neighborhoods here in Austin filled with beautiful, old and young native red oaks that haven't been infected and may never be. They add so much to the neighborhoods that it would be a shame to remove them, but proper preventive care must be addressed, mostly having to do with avoiding open wounds on the trees. More information on this and other oak wilt issues can be found on the following websites:
Germinating Mexican Persimmon seeds in Austin, TX. November 15, 2011 - I'm planning to germinate Mexican Persimmon seeds, and plant them this spring. I want a female for fruit. Is there any way to encourage a plant to be female, and if not, is there any way you can iden... view the full question and answer
Trees for creek side in Illinois July 04, 2008 - I have a creek that runs along my back yard, and was wondering if you could give me some suggestions on water loving trees to grow next to it. The creek gets sun all day and is located in zone 5. (so... view the full question and answer
What will grow under a magnolia in Houston? May 21, 2010 - What will grow under a magnolia tree in Houston? The area is shade and partly sunny. view the full question and answer
Is a Mexican plum planted last Spring in Houston ready to bloom April 08, 2011 - I live in Houston, TX. I bought my Mexican Plum last late Spring. It was about 4' tall. It is now about 6' tall, very healthy with lots of beautiful leaves. It gets a lot of sun. It did not blo... view the full question and answer
Junipers for restoring area in Bulverde TX November 03, 2012 - Are ashe or virginiana junipers for sale around the hill country? I would like to recreate the natural plant life that was bulldozed next to my home. Do you recommend any other types of juniper that ... view the full question and answer