| garlic mustard | USDA PLANTS Symbol: ALPE4 U.S. Nativity: Exotic Habit: Forbs/Herbs |
| Alliaria petiolata (Bieb.) Cavara & Grande |
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Taxonomic Rank: Magnoliopsida: Capparales: Brassicaceae |
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| Synonym(s): garlic-mustard, hedge garlic, sauce-alone, jack-by-the hedge, poor man's mustard, jack-n-the-bush, garlic root, garlicwort, mustard root | |
| Native Range: Africa, temp. & trop. Asia, Europe (GRIN); | |
Garlic mustard is an herbaceous, biennial forb that is an aggressive invader of wooded areas throughout the eastern and middle United States. First-year plants are basal rosettes with green, heart-shaped, 1-6 in. (2.5-15.2 cm) long leaves. Second-year plants produce a 1-4 ft. (0.3-1.2 m) tall flowering stalk with small, white flowers in the early spring. Plants can be easily recognized by a garlic odor that is present when any part of the plant is crushed and by the strongly toothed, triangular leaves. A high shade tolerance allows this plant to invade high-quality, mature woodlands, where it can form dense stands. These stands not only shade out native understory flora but also produce allelopathic compounds that inhibit seed germination of other species. Garlic mustard is native to Europe and was first introduced into New England during the 1800s for medicinal and culinary purposes. |
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Identification, Biology, Control and Management Resources
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| Selected Images from Invasive.org | View All Images at Invasive.org |
 Infestation; Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
 Foliage; first year leaves Jil Swearingen, USDI National Park Service, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower David Cappaert, Michigan State University, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); 1st year rosette Tom Heutte, USDA Forest Service, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Foliage; 1st-year basal rosette. Clayton County, IA Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Fruit(s); Long,thin, upright seed pods (siliques). Martin County, KY Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Flower(s); Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Plant(s); in flower Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Control; After control. Part of a before/after volunteer hand-pull control series. See image #2132001 for before image Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Control; Before control. Part of a before/after volunteer hand-pull control series. See image #2131100 for after image Chris Evans, Illinois Wildlife Action Plan, Bugwood.org Additional Resolutions & Image Usage |
 Infestation; Understory incursion Leslie J. Mehrhoff, University of Connecticut, Bugwood.org Additional Resolutions & Image Usage |
 Seed(s); Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org Additional Resolutions & Image Usage |
| EDDMapS Distribution: This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org Alternative content
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 State(s) Where Reported invasive. Based on state level agency and organization lists of invasive plants from WeedUS database. Alternative content
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