December’s Weed of the Month is Japanese barberry (Berberis thunbergii). This species is a specially regulated plant on Minnesota’s Noxious Weed list.

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 ...

It is a native of Europe, is a weed of waste places and cultivated fields. The berries frequently become mixed with harvested ... and have three veins on the upper surface. Flowers are yellow, borne ...

Black nightshade is often confused with deadly nightshade (Atropa bella-donna), which is a much more poisonous weed ... plants. Berries are usually either green or black. Black nightshade also has ...

A similar weed, wild radish has bristly leaves over all the flowering plant. Bright yellow flowers form at the ends of the branched stems, and flowers later form pods. The formation of pods is typical ...