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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 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. [4]
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]
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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 ...
The most invasive plant in Texas is the common bermudagrass (Cynodon dactylon). In certain cases, like a lawn or grazing pasture, it is extremely valuable to the landowner. Common bermudagrass ...
In North America, tall waterhemp is considered a major weed of agricultural fields and other disturbed habitats. [11] The Southern Weed Science Society includes tall waterhemp on their list of weed species. [21] However, it is not listed on the federal noxious weed list or any state lists in the United States. [22]