Apple tree fungus

Asked September 18, 2016, 12:58 AM EDT

We have small, white mushrooms growing on the trunks of established, semi-dwarf trees. Additionally, on several branches there is a leathery white fungus that covers 8-12 inches on the under side of the branch. One of the trees has lost nearly all of its leaves. Is there anything that can be done to save these two trees? Thank you, Dawn

Pine County Minnesota

1 Response

Fruit trees affected by wood rot fungi sometimes survive and even bear fruit for a number of years but their days are numbered. We don't know of anything that can be done to control the progression of the rot in the long run.

Many Minnesota apple trees were damaged in 2012 -2013 when colder than normal winter conditions followed autumn drought. These trees are particularly susceptible to wood rot.

Learn more here:

http://articles.extension.org/pages/60349/wood-rots-in-apple-trees
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/wood-decay/