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Unwanted List

Posted on 02.09.21 by Harney SWCD

The Weed of the Month has featured invasive plants which take over the sage steppe, pushing out native plants and creating fire hazards.  Invasives often have little or no nutrition value and many are poisonous.  Here are ones to watch out for in Harney County

A yellow thistle flower with sharp spines on its stem.
Yellow Starthistle. Besides taking over it is poisonous to horses
A field of red flowers with green foliage.
Pheasant eye. Dangerous to horses and pigs. Toxicity increases when cut and dried.
A vibrant orange flower with a green background.
Pheasant eye. Dangerous to horses and pigs. Toxicity increases when cut and dried.
A bushy plant with dense, slender, green-grey leaves, possibly in a dry habitat.
Halogeton. Dangerous to cattle and sheep
Green needle-like leaves on red stems, possibly a plant or shrub, against a dark background.
Halogeton. Dangerous to cattle and sheep
A close-up of a field with dense greenery and clusters of small white flowers.
Perennial Pepperweed. Dangerous to horses.
A stem with clusters of yellow flowers.
Tansy ragwort. Dangerous to horses and cattle
A single yellow flower with green leaves, possibly a weed, in natural light.
Goathead. Not toxic, but the burr could damage the mouth and digestive tract of an animal.
Yellow flowers with raindrops on petals.
St. John’s Wort. Invasive. Dangerous to horses, cattle, sheep, dogs and cats.
Green plant with hairy leaves and two pale yellow flowers with dark centers.
Henbane. Dangerous to cattle, fish and birds.
Green shrub with small white flowers.
African Rue. Dangerous to horses and possibly humans.
A yellow thistle flower with sharp spines on its stem.
A field of red flowers with green foliage.
A vibrant orange flower with a green background.
A bushy plant with dense, slender, green-grey leaves, possibly in a dry habitat.
Green needle-like leaves on red stems, possibly a plant or shrub, against a dark background.
A close-up of a field with dense greenery and clusters of small white flowers.
A stem with clusters of yellow flowers.
A single yellow flower with green leaves, possibly a weed, in natural light.
Yellow flowers with raindrops on petals.
Green plant with hairy leaves and two pale yellow flowers with dark centers.
Green shrub with small white flowers.
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