We love the vibrant colors of maple trees in the fall. These deciduous beauties bring not only great color but also a recognizable leaf shape and (our favorite) whirlybird seeds that helicopter their ...

Q. My maple tree has black spots on the leaves that just appeared recently. Should I be concerned about this? What should I do? A. Sometimes wet conditions earlier in the season can cause problems ...

Anthracnose is a common spring disease on maple trees common in the landscape including red (Acer rubrum), silver (Acer saccharinum), sugar (Acer saccharum) and Japanese (Acer palmatum) maples.

The list of diseases attacking trees in the Pacific Northwest grows every year. A pathogen now found in Bellingham brings an added concern: It can injure people. A research project using citizen ...

Nurseries in Virginia and surrounding states have observed an uptick in vascular streak dieback on redbud (pictured), maple and dogwood. Photo courtesy of the Virginia Department of Agriculture and ...

U.S. Army Corps of Engineers Forester Andy Meier inspects an elm tree on the Mississippi River for possible signs of Dutch elm disease, which has wiped out many of the elms in the river's floodplain ...

Our often-wet springs bring with them the perfect conditions for many plant diseases. While moist weather can create conditions for diseases on many plants, sick trees in the landscape tend to draw ...

“Trees, our largest and most long-lived plants, shut down food production in preparation for the winter drought. But the hardwoods don’t quietly sulk into dormancy like skunks and groundhogs; they ...

RENO BOTTOMS - The elm tree that towered over Andy Meier was a survivor. At 37 inches around and about 150 years old, it had so far avoided Dutch elm disease, the fungus that wiped out many of its ...