Spring should be here soon, so pay attention to the weather if you have a lawn service that applies broadleaf herbicides. If you have mature trees (especially oaks) and the weather this spring starts ...

This news release is available in German. The sensitivity of leaf unfolding phenology to climate warming has significantly declined since 1980s, according to a study recently published in the journal ...

Something is killing bigleaf maples — Washington’s biggest broadleaf tree — and scientists can’t stop it. They don’t even know what’s causing it. “We’ve looked for everything we can possibly think of ...

I have been receiving many calls recently about oak trees experiencing problems, and suddenly it occurred to me that this same problem has occurred twice, years ago during hot, dry springtime weather.

PORTLAND, Ore. (KOIN) — A proposed administrative rule would make it easier for Portland homeowners to plant young trees. Officials are considering changing city code to allow property owners to plant ...

Q I have a large collection of bonsai trees that all require some degree of winterization: Evergreen conifers and cold-hardy deciduous broadleaf trees (oaks, maples, hackberry) get mulched-in outdoors ...