
Full Answer
Is Tumbleweed invasive?
Abstract. Russian thistle (Salsola kali), the most common plant referred to as "tumbleweed" in the western United States, can cause a dermatitis in persons who come into direct contract with it. Tests were conducted to determine the mechanism of this dermatitis. Mechanical contact with plant branches, as well as scratch, patch, and photopatch tests with Russian thistle extract and …
What is Tumbleweed used for?
Mar 31, 2022 · ‘American Dude Ranch’ Review: The Tumbleweed Treatment As the American frontier vanished, thousands sought escape from the modern world via a vacation spent around the cowboy campfire.
How do you get rid of Tumbleweed?
Jun 10, 2017 · If you view tumbling tumbleweed as an icon of the American West, you are not alone. It’s been portrayed that way in movies. But, in fact, tumbleweed’s real name is Russian thistle (Salsola tragus syn. Kali tragus) and it is very, very invasive.For information about Russian thistle weeds, including tips on how to get rid of Russian thistle, read on.
How do you control Russian thistle Tumbleweeds?
Mar 30, 2022 · Cattle will eat tumbleweed in the absence of anything better. Tumbleweed is a very hardy plant, as it is resistant to salt and drought and is able to spread its seed over vast areas. The plant is able to procreate so well through this method that its seeds have not developed the protective coating or food stores seen in most other plants.

When does tumbleweed break off?
After the plant dries, the base of the stem becomes brittle and breaks off at soil level in fall and early winter. These round, spiny plants are capable of dispersing seed for miles as they tumble along in the wind. This dispersal characteristic has led to the more commonly used name of tumbleweed.
What is the name of the mite that kills Russian thistle?
There is recent interest in the introduction of a blister mite, Aceria salsolae, for Russian thistle control. A native to the Mediterranean Basin, this mite is known to attack only Russian thistle and stunts it by killing the growing tips.
What is the scientific name of the Russian thistle?
Naked, coiled Russian thistle seed. Russian thistle, also known as tumbleweed, is in the goosefoot family (Chenopodiaceae). Its scientific name is Salsola tragus, but it also has been known as Salsola iberica, Salsola kali, and Salsola australis. It is a summer annual native to southeastern Russia ...
How many seeds does a Russian thistle plant produce?
A large Russian thistle plant may produce more than 200,000 seeds. In spring, months after their dissemination, it is possible to trace the paths of tumbleweeds across plowed fields by the green trails of germinating Russian thistle seedlings. Russian thistle is especially well adapted to desert environments.
How long does it take for a Russian thistle seed to germinate?
A minimum amount of moisture, lasting only a few hours, will allow germination and root growth to deeper, subsurface moisture.
How did thistle spread?
After its introduction, it spread by contaminated seed, threshing crews, railroad cars (especially livestock cars), and by its windblown pattern of seed dissemination. In 1895 Russian thistle moved to the Pacific Coast in contaminated railroad cars that transported cattle to Lancaster in California’s Antelope Valley.
What is a Russian thistle?
Russian thistle is a bushy summer annual with numerous slender ascending stems that become quite woody at maturity. Stems vary from 8 to 36 inches in length and usually have reddish to purplish stripes. Seedlings have very finely dissected leaves that almost look like pine needles. Leaves of young plants are fleshy, dark green, narrow, and about 1 inch in length. Young plants are suitable for livestock forage and are sometimes grazed. As the plant matures in July through October, the older leaves become short and stiff with a sharp-pointed tip. The single, inconspicuous flowers lack petals and are borne above a pair of small spine-tipped bracts (a small modified leaf at the base of the flower) in most leaf axils (where the narrow leaves meet the stem). The bracts and spiny leaves prevent predation by herbivores as the plant nears maturity. The overall shape of the plant becomes oval to round and at maturity can attain a diameter of 18 inches to 6 feet or more under favorable soil moisture and fertility conditions. After the plant dries, the base of the stem becomes brittle and breaks off at soil level in fall and early winter. These round, spiny plants are capable of dispersing seed for miles as they tumble along in the wind. This dispersal characteristic has led to the more commonly used name of tumbleweed.
What is the real name of tumbleweed?
It’s been portrayed that way in movies. But, in fact, tumbleweed’s real name is Russian thistle ( Salsola tragus syn. Kali tragus) and it is very, very invasive.
Where did the Russian thistle come from?
The Russian thistle was brought to this country (South Dakota) by Russian immigrants. It is thought to have been mixed in contaminated flaxseed. It is a real problem in the American West since it accumulates toxic levels of nitrates that kill cattle and sheep using it for forage.
How tall does Russian thistle get?
About Russian Thistle Weeds. Russian thistle is a bushy annual forb that many Americans know as tumbleweed. It gets to three feet (1 m.) tall. Mature Russian thistle weeds break off at ground level and tumble across open lands, hence the common name associated with the plant.
What happens if you keep fields full of healthy crops?
It is replanting infested areas with other plants. If you keep fields full of healthy crops, you prevent the establishment of Russian thistle. Note: Any recommendations pertaining to the use of chemicals are for informational purposes only.
Is glyphosate safe for Russian thistle?
While the first two are selective herbicides that generally don’t injure grasses, glyphosate injures or kills most vegetation it comes into contact with, so it is not a safe means of control of Russian thistle. The best control of Russian thistle does not involve chemicals.
What happens when tumbleweeds attack?
Tumbleweeds are not only useless to farmers and ranchers, but sometimes the rolling plants can be a hazard. They pile up against fence gates, buildings, vehicles, or each other. They become tangled in electrical lines and clog water treatment plants.
Where can I find tumbleweeds in North America?
Other Tumblers. Other species of tumbleweeds found in North America are: Barbwire Russian thistle ( Salsola paulsenii) is found in desert areas. Sand usually anchors down this tumbleweed variety, preventing them from tumbling. Their seeds detach and are scattered by the wind.
How many square miles did the Russian thistle cover?
By the early 1890s, the Russian thistle had covered an area of approximately 35,000 square miles over a 20-year period. It created such an alarm that in 1894, the U.S. Department of Agriculture dispatched botanist Lyster Hoxie Dewie to investigate. He reported that the weed posed an existential threat to farms.
How many seeds can a Russian thistle spread?
Once mobile, it rolls on the slightest breeze. As tumbleweeds tumble, they disperse seeds. One plant can spread approximately 250,000 seeds each winter.
How big does a tumbleweed grow?
It takes advantage of summer rain and climate changes to grow faster and range farther than the others. It also grows larger — up to 6 feet across. Like Dewie more than a century before, scientists sound alarms about the new hybrid.
What is the color of tumbleweed?
Upon arrival, the shrubby plants proved they excelled at one thing — seed dispersal. Bright green and succulent when growing, tumbleweeds have reddish or purple shoots and green flowers accompanied by spiky bracts.
What was the Dust Bowl used for?
During the Dust Bowl period in the 1930s, it was used as forage hay out of desperation when grasses failed.”. The plant also contains nitrates and soluble oxalates in levels that are poisonous to sheep. By the early 1890s, the Russian thistle had covered an area of approximately 35,000 square miles over a 20-year period.
What is a tumbleweed?
Play media. A tumbleweed ( Lechenaultia divaricata) A tumbleweed is a structural part of the above-ground anatomy of a number of species of plants. It is a diaspore that once it is mature and dry, detaches from its root or stem and rolls due to the force of the wind. In most such species, the tumbleweed is in effect the entire plant apart from ...
What is tumbleweed anatomical?
An anatomical structure of certain plants that detaches and rolls in the wind. For other uses, see Tumbleweed (disambiguation). This article is about an anatomical structure of certain plants. For the most conspicuous species colloquially called " tumbleweed " in the U.S., see Kali tragus. Play media.
What family of plants produce tumbleweeds?
In the legume family ( Fabaceae ), Baptisia tinctoria and some species of Psoralea produce tumbleweeds . In Psoralea the tumbleweed detaches from the plant by abscission of the stem. In the Plantaginaceae, Plantago cretica forms tumbleweeds.
What is tumbleweed dispersal strategy?
The tumbleweed dispersal strategies are unusual among plants; most species disperse their seeds by other mechanisms. Many tumbleweeds are ruderal species, opportunistic agricultural weeds. Tumbleweeds have been recorded in the following plant groups:
How deep are tumbleweeds in Washington?
The tumbleweeds piled up 15 to 20 feet (5–7 meters) deep in some areas, burying cars and trucks and closing Washington State Route 240 for ten hours while road crews used snowplows to remove the tumbleweeds. Tumbleweeds have also been observed to cause issues with wastewater treatment plants.
How long does it take for tumbleweed seeds to drop?
The light, open, globular structures form very effective tumbleweed diaspores, dropping their seeds usually within a few days as the follicles fail under the wear of rolling. The seeds are fleshy, short-lived, and germinate rapidly where they land.
What plants are tumbleweeds?
In the Brassicaceae, Sisymbrium altissimum, Crambe maritima, Lepidium, and a resurrection plant, Anastatica form tumbleweeds. In the Caryophyllaceae, the garden plant "baby's-breath" ( Gypsophila paniculata ), produces a dry inflorescence that forms tumbleweeds.

Identification
- Russian thistle is a bushy summer annual with numerous slender ascending stems that become quite woody at maturity. Stems vary from 8 to 36 inches in length and usually have reddish to purplish stripes. Seedlings have very finely dissected leaves that almost look like pine needles. Leaves of young plants are fleshy, dark green, narrow, and about 1 ...
Life Cycle
- The Russian thistle seed is a naked, coiled embryoor plantlet within the seed, that begins to uncoil when it is exposed to the proper temperature (52° to 90°F) and moisture conditions. As it uncoils, the young taproot extends into the soil within about 12 hours, making the germination period quite rapid and giving Russian thistle a decided advantage over many other plants under limited moist…
Impact
- In late fall and early winter, this troublesome pest becomes conspicuous as it breaks from the soil and is blown across highways and fields. Although Russian thistle, or tumbleweed, conjures up images of the old West, it can be a serious weed pest. In agricultural areas, Russian thistle can reduce yield and quality of numerous crops, particularly alfalfa and small grains. It depletes soil …
Management
- Biological control. Control of Russian thistle is difficult. There have been numerous attempts through the years to import biological control agents, such as insects, but none have been successful. The biological control agents have become established but do not provide sufficient control. However, there is hope on the horizon. There is recent interest in the introduction of a bli…
References
- Hickman, J. C., ed. 1993. Jepson Manual: Higher Plants of California.Berkeley: Univ. Calif. Press. DiTomaso, J. M., and E. A. Healy. 2007.Weeds of California and other Western States.Oakland: Univ. Calif. Agric. Nat. Res. Publ. 3488. Rhodes, W. A., E. F. Frolich, and A. Walice. 1967. Russian thistle seeds.Calif. Agric.21(4):2. Smith, L., R. Sobhian, and M. Cristofaro. 2006. Prospects for bi…
Publication Information
- Pest Notes: Russian Thistle UC ANR Publication 7486 Authors: S. B. Orloff, UC Cooperative Extension, Siskiyou Co.; D. W. Cudney, Botany and Plant Sciences emeritus, UC Riverside; C. L. Elmore, Plant Science emeritus, UC Davis; J. M. DiTomaso, Plant Science, UC Davis Produced by UC Statewide IPM Program, University of California, Davis, CA 95616 PDF: To display a PDF doc…