Agriculture officials in Marin County are alerting property owners and arborists to be on the lookout for a tiny invasive beetle that attacks oak trees, after the insect was detected last month in ...

Oak trees are a vital part of both urban neighborhoods and natural ecosystems. Experts issue warning as hidden pathogen ...

Nebraska Game & Parks confirmed that the “Old Wolf Oak” at Ponca State Park, a tree that is believed to be more than 300 ...

One of Nebraska’s oldest trees — a tourist draw at Ponca State Park — has died, and officials are blaming drought conditions.

Arborists from the Grand Rapids Parks and Recreation Department will start treatment on a group of oak trees in Aman Park infected with oak wilt.

The world's oldest living tree, known as "Methuselah," is a bristlecone pine in the Inyo National Forest between the Sierra Nevada range in California and the Nevada border. Experts believe it has ...

Mediterranean oak borers are threatening Marin County's white oaks, with arborists and officials working on control measures.

Leaves on diseased live oaks often develop chlorotic veins that eventually turn necrotic, a symptom called veinal necrosis. (Texas A&M Forest Service) Oak wilt is one of the most destructive tree ...

A once towering Northern Catalpa tree that stood along a rural highway in Menard County was toppled by a recent storm.