Garlic mustard (Alliaria petiolata) is an herbaceous weed-like plant that primarily inhabits forested areas.New sprouts have heart shaped basal leaves the first year. Garlic mustard (Alliaria petiolata) is also known as Poor Man’s Mustard, Hedge Garlic, Garlic Root and Jack-by-the-Hedge. Although edible for people, it is not eaten by local wildlife or insects. Garlic mustard [Alliaria petiolata (Bieb.) Garlic mustard (Alliaria petiolata) is an herbaceous, biennial forb that was introduced from Europe in the mid-1800s.This highly invasive exotic species grows and spreads extremely quickly, forming thick stands that shade-out and out-compete native understory plants and tree seedlings, to the point of completely suppressing their growth. It is found in forested areas. As they mature, the leaves become triangular and toothed. Garlic mustard biology and life cycle. Garlic mustard is an invasive non-native biennial herb that spreads by seed. Garlic mustard is a shade tolerant, invasive species with the capability to establish in our state. Garlic mustard was first recorded in the United States around 1868, from Long Island, New York, and was likely introduced by settlers for food and medicinal purposes. Garlic Mustard (Alliaria petiolata) Garlic mustard has a two-year life cycle, and one plant can produce more than 7,000 seeds before dying. Cavara and Grande] is a member of the mustard family (Brassicaceae). It is an invasive plant found throughout the Northeastern and Midwestern US as well as Southeastern Canada. Garlic mustard was originally brought to the United States from Europe during colonial times as an early spring edible. Garlic mustard is highly invasive and threatens the abundant wildflowers and diverse forest ecosystem of West Virginia, Virginia, Ohio, Indiana, and Illinois. It is called garlic mustard because the leaves have a garlic smell when they are crushed. Species Assessment Groups (SAG) were assembled to recommend a legal classification for each species considered for NR 40. Origin. Garlic mustard is single-stalked plant, which typically grows to about 3 feet tall with small white flowers near the top. -National Wildlife Federation Garlic mustard (Alliaria petiolata) is also known as Poor Man’s Mustard, Hedge Garlic, Garlic Root and Jack-by-the-Hedge. Invasive Species; Garlic Mustard; About Garlic Mustard. Garlic mustard was brought from Europe in the mid-1800s to be cultivated for food and medicine. An invasive species can be any kind of living organism—a plant, insect, fish, fungus or bacteria—that is not native to an ecosystem and causes harm. This is considered a watch list species. The plants have small four-petaled flowers in spring. It is called garlic It can also host a variety of viruses that can attack both wild and cultivated plants. 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