On a late May morning, a vast field of invasive yellow mustard grass swayed gently in the cool ocean breeze. To the east, there’s downtown Culver City and, in the distance, the smog-shrouded San ...

PORTLAND, Ore. — In late spring, a tree-lined clearing in the Johnson Creek Watershed of Southeast Portland blooms with small white flowers atop leafy green stalks. Despite looking right at home, ...

It may seem inconsequential in the grand scheme of maintaining biodiversity, but finding a favorite spot — a garden bench, a walking path, a picnic area — is the first step for gardeners in the ...

Keeping areas free of invasive species is a matter of vigilance and a project that can take several years. Invasive species — the state maintains a list that is updated regularly — impact the whole ...