White pine with Armillaria Root Rot

Asked September 1, 2015, 7:52 AM EDT

I have a very large white pine. Based on earlier problems with other white pines in my yard, I believe this is Armillaria Root Rot. However, this tree is very central in our yard and I would like to save it. Is there any treatment that can save one tree? (The tree is approx. 80 foot tall) Thank YOu

Anoka County Minnesota

1 Response

Treatment may depend on the extent of the problem. If confirmed to be armillaria root rot, and if not too extensive a problem, it may be possible to cut out some of the infected parts and extend the life of the tree. Taking good care of the tree otherwise may also help (adequate water, avoiding damage or other stress). It doesn't appear that there is a lot of support for use of chemical treatment at this time. Most of the available resources focus on prevention rather than treatment. To help evaluate the situation, it may help to involve an arborist. Your city may have one on staff to consult with, or see below for additional information on hiring an arborist. http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/how-to-hire-a-professional-arborist/ I'm also including additional references for armillaria root rot. http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/armillaria-root-rot/ And http://ipm.illinois.edu/landturf/diseases/armillaria/