Oak wilt - Ask Extension
Hello, I suspect that our red oak has oak wilt. If we need to remove the tree, is there a time of year you recommend so that the fungus doesn't spread...
Knowledgebase
Oak wilt #365351
Asked September 24, 2016, 11:54 AM EDT
Hello, I suspect that our red oak has oak wilt. If we need to remove the tree, is there a time of year you recommend so that the fungus doesn't spread too much during removal? Thank you!
Anoka County Minnesota
Expert Response
Accurate diagnosis of the disease is highly recommended before any control action is undertaken. Diagnosis can be done by an experienced tree care professional or by consulting the University of Minnesota's Plant Disease Clinic.
http://pdc.umn.edu
To avoid above-ground insect spread of the disease, it is important to remove recently killed trees before April 1, when the fungus begins to fruit and the beetles begin to feed.
So far as when to remove a wilt infected tree is concerned, consider this:
High Risk months in Minnesota are typically April, May and June.
Low Risk months are March, July, August, September and October.
Safe months are November, December, January, February and March.
http://pdc.umn.edu
To avoid above-ground insect spread of the disease, it is important to remove recently killed trees before April 1, when the fungus begins to fruit and the beetles begin to feed.
So far as when to remove a wilt infected tree is concerned, consider this:
High Risk months in Minnesota are typically April, May and June.
Low Risk months are March, July, August, September and October.
Safe months are November, December, January, February and March.
