You probably aren’t watering or pruning the 75-foot oak or maple in the front yard, but mature trees aren’t maintenance free.

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What to know before the extreme cold settles in.

Woolly aphids may be to blame. These insects suck sap from healthy plants and leave a sticky substance behind. They can be ...

A prolonged cold spell has come to an abrupt end and the first above-freezing temperatures of spring have set both maple sap ...

SPOKANE, Wash. — Spokane's urban forest is facing a significant challenge due to a pine bark beetle outbreak, which has resulted in the removal of at least 200 Ponderosa trees. Urban Forester Katie ...

Arborists see problems in newly planted trees in NuLu, part of the city's $12 million East Market Streetscape project, and many could need replanting.

The ranch real estate experts at James Bigley Ranches reveal how axis deer are adapting to new diets, including the surprising behavior of eating tree bark. Column: Marco Rubio is the only adult left ...

After weeks of bitter cold and deep snow across central Indiana, a quieter but much sweeter seasonal shift is beginning to take shape. Maple syrup producers across the region are starting to tap trees ...

Trees You Should Avoid Planting in Your Yard: 9 That Can Cause Headaches Planting a tree in your yard can feel like a small ...

Douglas fir trees that survived the recent Frye Fire in the Pinaleño Mountains near Safford are prime habitat for endangered Mount Graham red squirrels — but those trees are threatened by tree-killing ...