There are several Armillaria species, but Armillaria mellea is the species of this fungi commonly found in home gardens in California. This fungal disease is also known as oak root fungus.

Sometimes characterized by browning or golden leaves at the top of the tree and a dark bluish-gray discoloration in the bark, oak wilt kills thousands of trees each year, and the disease is present in ...

For oak wilt testing, collect four to six branch sections that are about 8-12 inches long, roughly 0.5-1.5-inch in diameter and alive but showing symptoms of leaf wilt. Keep the samples cool, but ...

The disease is spread from tree to tree by various species of beetles about the size of a grain of rice. The insects are attracted to tree sap and the oak wilt fungus. The beetles end up crawling ...

The so-called “Ambrosia Beetle” spreads different types of fungus from tree to tree that could cause a disease called oak wilt, which can kill a tree in two or three years, the Oregon ...

York Region is encouraging residents to help prevent the spread of two invasive species attacking trees: the spotted ...

There are several Armillaria species, but Armillaria mellea is the species of this fungi commonly found in home gardens in California. This fungal disease is also known as oak root fungus.