Douglas fir dieback, caused by drought and insects, has spread from southwest Oregon into the Willamette Valley in a major ...

The spring sniffles are suddenly getting harder to ignore across the Northeast. Pollen levels are spiking across the region, with tree pollen driving the worst of the season so far, as warmer, ...

A tree can look fine from the street and still be under stress. Yellowing leaves, weak growth, split bark, and early leaf ...