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	Palmer Amaranth: A New Threat to Wyoming
	Publication #: B-1396 Date Published: 7/25/2024 Publication Author(s): Daniel J. Coles Kelsey C. Brock Andrew R. Kniss

Description:

Palmer amaranth is one of the worst agricultural weeds in the United States, where it significantly reduces crop yield and profitability. This plant has only recently invaded many areas of the United States, and research aiming to understand and manage impacts has not kept pace with the need to mitigate damages. Native to the southwestern United States and northwestern Mexico, Palmer amaranth has spread to 44 of the Lower 48 states, including Wyoming, where it was first identified in 2018. In 2023, Palmer amaranth was added to Wyoming’s noxious weed list. Major impacts to Wyoming’s crop production are expected unless measures are taken to prevent further establishment. 

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