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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]
The Idaho Department of Agriculture has around 300 introduced or exotic species listed with 36 classified as noxious weeds. The legal designation of noxious weed for a plant in Idaho can use these four criteria: [89] It is present in but not native to state-province-ecosystem. It is potentially more harmful than beneficial to that area.
The Australian Weeds Committee maintain a noxious weeds list covering all the states and territories. [1] Acacia farnesiana (sweet acacia) [2] Ageratina riparia (mistflower) [3] Ailanthus altissima (tree of heaven) [4] Alternanthera philoxeroides (alligator weed) [4] Andropogon virginicus (broomsedge) [5] Annona glabra (alligator apple) [4]
Goatsrue, a federally listed noxious weed and toxic to humans and animals if ingested, has been identified in Whatcom County. Standing 4 feet to 6 feet tall with white or purple pea-like flowers ...
In November of 2021, Pennsylvania added the Bradford pear to its "Noxious Weed," list, which makes it illegal to propagate or sell the tree in the state. "Noxious weeds are determined to be ...
The Federal Noxious Weed Act of 1974 ("FNWA", Pub. L. 93–629, 88 Stat. 2148, enacted January 3, 1975) established a federal program to control the spread of noxious weeds. The United States Secretary of Agriculture was given the authority to declare plants "noxious weeds", and limit the interstate spread of such plants without a permit.
The Ohio House unanimously passed a bill to loosen rules for sharing certain seeds for noncommercial purposes and remove some plants − including milkweed − from the state's noxious weeds list.
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Noxious Weeds in 2000 with the repeal of sections 2801 through 2813 of the Federal Noxious Weed Act of 1974, which were superseded by updated legislation; however it is still listed as a noxious weed in various states.