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 ...