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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]
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.
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]
The species is found in North America. Although commonly eaten by animals, with birds consuming the seeds, T. radicans is considered a noxious weed. As a poison ivy, if causes urushiol-induced contact dermatitis in most people who touch it, producing an itchy, irritating, and sometimes painful rash.
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The Texas Department of Agriculture says any plant species that has a serious potential to cause economical or ecological harm to the agriculture, horticulture, native plants, ecology and ...
This species is well known as a noxious weed, both in its native range and in areas where it is an introduced and often invasive species. [7] [8] [9] It is naturalized in some areas, and it is recorded as an adventive species in others. [3] It grows in many types of disturbed habitat, such as roadsides, and in cultivated fields.
Cogongrass, one of the 10 worst weeds in the world, was recently identified in Idaho’s Foothills. This is the first case of cogongrass in the western United States An aggressive weed infesting ...