Oak trees have a surprising trick to fight back against hungry caterpillars: they simply wait. When trees are heavily ...

When Illinois landowners noticed tree deaths and diseases on their properties ramp up in 2017, they suspected industrial agriculture. A survey found herbicides in 90 percent of tree tissues Christian ...

Gardening season is underway, and you may have questions. To ask one, simply go to the OSU Extension website, type it in and include the county where you live. A photo is very helpful. Q: Our oak tree ...

An invasive pest that kills oak trees continues to spread through the Willamette Valley between Portland and Salem. Oregon officials completed a two-year study this summer that found the Mediterranean ...

A new study suggests that oak trees attacked by caterpillars can delay leafing out the following spring. That tiny shift, ...