Growth (leaves) is dying in some of the branches in our 8 year old African Sumac tree. The companion Sumac tree about 50 yards away is healthy and thriving. What can we do to save the tree that is suffering the loss of healthy branches?
African Sumac Tree
Certified GKH Gardening Expert
This could be a problem with either overwatering or underwatering, or a disease problem. Overwatering could occur if your soil has poor drainage.
See this article about cotton root rot, a disease which can affect African sumac and which could cause dying leaves and branches:
This tree can also be infected by verticillium wilt disease. See this article:
You may also want to consult an arborist or your local extension service to see what can be done.