Quaking aspen (Populus tremuloides Michx ... pinyon, and short-leaf pine. This disease causes death within five years of a tree's life if a stem infection occurs. Mortality is heaviest on ...

Anthracnose refers to a group of fungal diseases that cause discolored spots on leaves and, occasionally, on other parts of the tree. These spots usually are tan, purplish, dark brown or black and ...

A common disease that occurs on bermudagrass greens in our region at this time of year is leaf spot, caused by Bipolaris or Drechslera (formerly known asHelminthosporium). Unlike other diseases, leaf ...

Noticing leaves on the ground under ash and maple trees causes us to look up into the trees where spots are seen on the ...