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This list of invasive plant species in Wisconsin includes non-native plant species or strains "that become established in natural plant communities and wild areas, replacing native vegetation". [1] The Invasive Plants Association of Wisconsin (IPAW) is a group working to address the problems presented by invasive species in Wisconsin. [1]
In some areas, Bohemian knotweed is classified as an invasive species and a noxious weed. It is illegal to transport and sell in multiple US states, including Minnesota, [1] Washington, [5] and Wisconsin. [6] Mechanical control and hand pulling are ineffective. Repeat herbicide application through spraying leaves and injecting stems is the best ...
In the US, giant hogweed occurs in Maine, Wisconsin, and south to Indiana, Michigan, Maryland, and New Jersey. [20] [15] [21] In June 2018, it was reported growing in Virginia and North Carolina. [22] [23] The plant is federally listed as a noxious weed in the US. [20]
As a noxious weed in the United States. The Lythrum genus is listed as a noxious weed in Michigan, North Carolina, and Wisconsin. [10] Native American ethnobotany
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. [31] Noxious weeds came to the U.S. by way of colonization. [32] Some wildflowers are lesser known noxious weeds. A few of them are banned in certain states. [33]
By 1997, the vine was placed on the "Federal Noxious Weed List". [ 5 ] [ 7 ] Kudzu was removed from the list of Federal Noxious Weeds in 2000 with the repeal of sections 2801 through 2813 of the Federal Noxious Weed Act of 1974, which were superseded by updated legislation; however it is still listed as a noxious weed in various states.
The plant can be found growing in hedges and waste places, limestone scree and as a garden weed. [21] [22] G. aparine prefers moist soils and can exist in areas with poor drainage. It reportedly flourishes in heavy soils with above-average nitrogen and phosphorus content, and prefers soils with a pH value between 5.5 and 8.0.
[2] [3] [4] It is considered to be one of the ten worst weeds in the world. [5] In the United States, Johnson grass is listed as either a noxious or quarantined weed in 19 states. [ 6 ] With Sorghum bicolor it is a parent of Sorghum × almum , a forage crop also considered a weed in places.