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Sheridan County Noxious Weeds

Purple Loosestrife

Purple loosestrife is a perennial plant that is native to Europe, Asia, Africa, and Australia. This plant can grow up to 2 meters high. The stems are reddish-purple and square. The leaves are lanceolate in shape, and they alternate in threes on the stem. The flowers are reddish-purple and contain a small fruit capsule with tiny seeds inside. When the plant is mature in the fall, the leaves turn bright red, and the stalks turn brown. 

Plumeless Thistle

Plumeless thistle is a plant known for being tall: often two meters in height. Plumeless thistle is very similar to Canada and Musk thistles. The stem is spiny and has woolly hairs, and the leaves on the stem are spiny. Flower heads are spherical and are often pink-purple. 

Leafy Spurge

Leafy spurge is a perennial plant native to Europe, Asia, Himalaya, Korea, and eastern Siberia. The stems are mostly hairless, and the leaves are lanceolate in shape with slight waves to them. The flowers are small and yellow, grown in umbels. All parts of the plant contains a white milky sap which is toxic.

Musk Thistle

Musk thistle is a biennial plant native to Eurasia. This plant tends to grow in neutral to acidic soils, so it is often found in meadows, grasslands, heavily grazed areas, and open disturbed soils like roadside ditches. Seedlings grown in rosettes, and in their second year of life, they should up a spiky, multi-branched stem with a flower head. 

Canada Thistle

Canada thistle is a perennial plant native to Europe and northern Asia. It is a pollinating, flowering plant that has alternating leaves on the stem. The flowers are pink-purple in color and florets have a feathery pappus on the end. 


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