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Nebraska Noxious Weeds

Giant Knotweed

Giant knotweed is a perennial plant that can grow over 12 feet tall. It has hollow stems that are green and jointed, The leaves alternate up the stem and are oval in shape, with a tapering tip.  This plant has greenish-white flowers. The fruit is papery. 

Bohemian Knotweed

Bohemian knotweed is an extremely tall plant that is often found in dry areas. It is similar to the Japanese knotweed. Stems are reddish-brown and branched. The leaves are heart-shaped and large. The leaves are also thick and rough. Hairs often grow on the undersides of the leaves, and the flower clusters are cream-colored. 

Sericea Lespedeza

Sericea Lespedeza is a perennial plant native to Asia and eastern Australia. Reaching it’s maximum height, it can grow to 2 meters tall. The stems are densely covered in leaves, and open flowers are purple, cream, white, or yellow in color. The fruit is a legume pod. 

Japanese Knotweed

Japanese knotweed is a perennial plant that is native to East Asia. Although the plant can get very large in size, it is common to see them in small sizes growing through cracks in pavement. The leaves are ovals and extremely broad. The flowers are small, white, and erect. 


Phragmites are a species of large perennial grasses that are often found in wetland range sites with high alkaline levels. This grass often forms reed beds, and each blade can grow up to 16 feet tall. The leaves are extremely long, and the flowers are dark purple. 

Seth and Ashlei Tausan  •  308-282-1027  •  P.O. Box 406   •  Gordon, NE 69343