SEVIGNY: A partnership to save the trees was started in 2018 between the Dil'zhe'e Apache, the Forest Service and ecologists at Northern Arizona University. It's grown to include five Apache tribes.

As temperatures drop in Arizona and autumn sets in, some may wonder when to expect the trees in northern areas of the state to change from green to yellows, oranges and reds. The City of Flagstaff ...

Goldspotted oak borers, otherwise referred to as GSOBs, are targeting trees in the Golden State, even though they are native to Arizona and Northern Mexico.

OAK FLAT, Ariz. (AP) — Azee Romero climbed barefoot on the wrinkled trunk of the massive Emory oak tree at the center of the Oak Flat Campground. The 5-year-old in his black dinosaur t-shirt ...

Glenn Ross Images/Getty Images. An oak tree is one of the most common species of trees in the Northern Hemisphere which includes North America. Oak trees come in two major prototypes — red oak ...

Idaho. Idaho's state tree is the western white pine, which grows primarily in the northern part of the state.. Illinois. The white oak is Illinois' state tree. According to Illinois' Department of ...

Tree limbs and tops began falling off century-old black oak trees on the La Jolla reservation in northern San Diego County around 2014 and nobody knew why.

SEVIGNY: A partnership to save the trees was started in 2018 between the Dil'zhe'e Apache, the Forest Service and ecologists at Northern Arizona University. It's grown to include five Apache tribes.

An invasive beetle is laying its eggs in the nooks and crannies of oak tree bark in California, ... even though they are native to Arizona and Northern Mexico.

SEVIGNY: A partnership to save the trees was started in 2018 between the Dil'zhe'e Apache, the Forest Service and ecologists at Northern Arizona University. It's grown to include five Apache tribes.