November’s Weed of the Month, Oriental bittersweet (Celastrus orbiculatus), is a woody vine with colorful red fruit. It was brought to North America from the Asia and used as an ornamental plant.

Of the many different invasive vines that trouble American gardeners, Oriental bittersweet, also known as round leaf bittersweet (Celastrus orbiculatus), is one of the worst. Not only is it fast ...