Russian-thistle USDA PLANTS SYMBOL: SATR12
Salsola tragus L.
Synonym(s): prickly Russian thistle

Russian thistle is an annual herb that can grow to 4 ft. (1.2 m) tall. It was introduced into the United States in the mid 1870s, possibly as a contaminant in flax seed. Leaves are alternate and narrow. Upper leaves have a sharp point at the apex and are 1.3-2 in. (3-5 cm) long. Flowering occurs from midsummer to fall, when small, pink to greenish flowers develop from the leaf axils. Each flower is subtended by 3, spine-tipped leaves. After the plant matures it detaches from the root system and tumbles in the wind, spreading seed (like another common name “tumbleweed” suggests).

Identification, Biology, Control and Management Resources

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Fruit(s); Fruits and seeds
Howard F. Schwartz, Colorado State University, Bugwood.org
Additional Resolutions & Image Usage