IUCN threat status:

Not evaluated

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History in the United States

Purple loosestrife was introduced to the northeastern U.S. and Canada in the 1800s, for ornamental and medicinal uses. It is still widely sold as an ornamental, except in states such as Minnesota, Wisconsin, and Illinois where regulations now prohibit its sale, purchase and distribution.

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U.S. National Park Service Weeds Gone Wild website

Source: U.S. National Park Service

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