Question: I have three pine trees in my front yard. One of them has turned brown during the past month and looks dead. The others look OK. Any idea what caused it and what I should do? - Pat F., Tulsa ...

Pines have earned a secure niche in America’s urban landscape thanks to their diversity, adaptability and beauty. Over the past few years, however, a disease called pine wilt has killed so many Scots ...

Many of the inner needles of my white pine tree are turning brown, but the limb tips are still green; could this be the bad pine disease going around? - Norm, Tulsa Brown pine needles in fall are most ...

Pine wilt is a devastating disease affecting non-native pine trees. The first reported occurrence was in Japan in the early 1900s. It wasn’t until 1971 that the pine wood nematode was identified as ...

Working for “Tree Trouble,” I’ve been blessed with observing the health and structure of trees wherever I go. Lately, I can’t help but notice all of the Pine Wilt Disease I see.

The dying pine trees across Edmond and northwest Oklahoma City are hard to miss. Driving down the Lake Hefner Parkway and other major thoroughfares in the area, you will notice the pines which rapidly ...

1. Pine wilt disease (PWD) invaded southern Japan in the early 1900s and has gradually expanded its range to northern Honshu (Japanese mainland). The disease is caused by a pathogenic North American ...

The scent of pine is one of the hallmarks of this happy time of the year. Perhaps that’s what inspires so many homeowners to plant pine trees in their yards. “Unfortunately, many of them don’t do very ...