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Verbascum blattaria, the moth mullein, [1] is a flowering biennial plant belonging to the figwort family Scrophulariaceae.A native of Eurasia and North Africa, it has naturalized in the United States and most of Canada since its introduction and has become an invasive species there. [2]
It now is a noxious weed throughout North America, dominating disturbed habitats such as roadsides, cultivated fields, eroded slopes, and arid regions with sparse vegetation. Though it is a troublesome weed, Kali tragus also provides useful livestock forage on arid rangelands. [9]
The federal government defines noxious weeds under the Federal Noxious Weed Act of 1974. Noxious weeds are also defined by the state governments in the United States. [26] Noxious weeds came to the U.S. by way of colonization. [27] Some wildflowers are lesser known noxious weeds. A few of them are banned in certain states. [28]
Horseweed is commonly considered a weed, and in Ohio, Oregon, and some other locations, [11] it has been declared a noxious weed. [12] [13] It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware. [14] It can be found in fields, meadows, and gardens throughout its native range.
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The genus Cuscuta is listed as a noxious weed in Arizona, Arkansas, Massachusetts, Michigan, Oregon, and South Dakota.The genus is also listed as a noxious weed in Alabama, California, Florida, Minnesota, North Carolina, South Carolina, and Vermont, but native species are exempt from the noxious designation in those states.
The weed became familiar throughout the country when the KCCI 8 Iowa News Facebook page posted this video, now with over five million views: Wild parsnip is yellow and resembles a wildflower. When ...
Linaria dalmatica is listed as a noxious weed in fourteen U.S. states and three provinces in Canada. [6] [8] [9] However, it is present in thirty-one U.S. states and ten provinces and two territories in Canada. It is a grassland invader native to the Mediterranean region, and it was introduced to North America in the late 1800s.