This pest delivers a venomous bite that causes burning sensations. It may be hiding in shade trees in your yard before ...

One of the most destructive tree diseases is back in Denver. Dutch elm disease ravaged the urban canopy in the city in the 1970s but disappeared in 2011. But just last month, the aggressive tree ...

Purdue Landscape Report: We have received a few elm tree samples this year with a disease we do not often see, but which is relatively common: black spot of elm. This disease, also called elm ...

Dutch elm disease is caused by a fungus and is highly lethal to elm trees. It can be spread through root grafts, elm bark ...

Q: After Hurricane Ike we discovered one of our elm trees had saw dust at the base of the tree. I have not been able to see what invader is causing the problem. Can you determine what the problem is? ...