Invasive Garlic mustard spreads across 37 US states and six Canadian provinces

(Alliaria petiolata) Garlic Mustard. Image Credit: US Department of Agriculture This plant was introduced to North America in the 1860s for its culinary and medicinal value, but has become a stubborn threat to woodlands throughout the continent. Native to Europe and Asia, garlic mustard was first reported in Long Island, New York and has since spread to most US states and Canadian provinces. The plant was once valued as a useful herb . Now, it threatens native vegetation by competing for essential resources and disrupting relationships between plants and soil. Its ability to thrive in shaded forests has made it particularly difficult to control.How garlic mustard spread across North AmericaGarlic mustard, scientifically known as Alliaria petiolata, belongs to the mustard family and is native to Europe and parts of Asia. According to the US Forest Service’s Fire Effects Information System, the plant was first reported in North America in 1868 on Long Island, New York. It subsequently became established across much of the northeastern and midwestern United States.The University of Maryland explains that European immigrants introduced garlic mustard during the 1860s for several practi...