Now that the landscape is green and the gardens are in bloom, it’s easy to tell which plants aren’t thriving. If you have an aspen tree struggling, the cause could be the fungus Cytospora. Cytospora ...

When the branches of your trees and shrubs are bare in winter, you have an opportunity to spot cankers that might be hidden by leaves in summer. A canker is an area of disease in the wood of a plant. ...

Q. In late spring, you wrote about canker on maple trees. The description fit the problem with our Norway maple perfectly. Our tree was planted by the builder about two years ago. We initially thought ...

When a branch falls or a tree dies, one common reason is a group of diseases with an especially ominous name: canker diseases. “Canker” comes from the same root as “cancer.” Like cancers, cankers can ...

My Leyland cypress hedge has Seiridium unicorne canker fungus. The photo you see is one of many Leylands in my yard. I often regret my decision to plant the species but I also wish I had reviewed this ...

In the past 15-plus years, there is no telling how many times I have answered a phone call or had someone come in to the office with the question, “My trees are dying, what is the problem?” You go ...

Q: I just removed a maple tree that had a bleeding canker. It has been slowly dying for the last few years. My question is before planting another tree in that area, do I need to treat the soil and if ...

A tree service recently looked at one of our trees and said it had cankers. Can you explain what a tree canker is and what causes them? If you have a dead area of tissue on a tree leaf, it is called a ...

Thousand cankers disease, a fungus spread by a beetle, can kill walnut and butternut trees by destroying tissue just beneath the bark. (New York State Invasive Species) Syracuse, N.Y. -- A tree ...

TALLAHASSEE -- A state law requiring the removal of trees within 1,900 feet of one infected with citrus canker is being reviewed by the Florida Department of Agriculture in the aftermath of four ...

Q. In late spring, you wrote about canker on maple trees. The description fit the problem with our Norway maple perfectly. Our tree was planted by the builder about two years ago. We initially thought ...