Oaks are prone to developing a wide array of fungal infections. One of the most common types of fungal disease is oak wilt, which affects all types of oak trees.
Oak wilt, a form of fungal infection, can be fatal to the oak tree. It causes leaves to drop and infects the tree bark.
Oak wilt was first identified as a major problem in Wisconsin in 1944. It has been seen in nearly half of the United States and is especially common in the Midwest.
Fungus infects the leaves first, causing them to wilt, turn brown, and drop. Red oaks may develop fungal mats under the bark, while white oaks have discolored annual rings.
The oak wilt fungus is typically spread from diseased trees to healthy trees through natural root grafts. Sap and bark eating beetles also spread fungus from tree to tree.
Oak wilt cannot be cured in infected trees. Remove diseased trees and place mechanical or chemical barriers between diseased and healthy trees to prevent the spread of oak wilt.
- Photo Credit Image by Flickr.com, courtesy of Paul Sapiano
Live Oak Tree Problems
A full grown live oak is a thing of beauty. Living up to 100 years, live oaks can grow to 85 feet...
Black Mold on Oak Trees
Black mold on oak trees, caused by sooty mold, is common disease of oak and other trees. Although the mold is largely...
My Oak Tree Has Fungus Balls on the Branches
Fungus balls on the branches of an oak tree are properly known as oak galls and result from an infestation of insects...
White Rot Fungus on Oak Trees
White rot fungus is unique among microorganisms in its ability to metabolize non only large amounts of lignin in wood, but also...
Oak Trees With Moss Fungus
Homeowners throughout much of the southern United States find their oak trees becoming coated with mosslike, green, fungal growths. These growths commonly...