dames rocket USDA PLANTS Symbol: HEMA3
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Hesperis matronalis L.

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Taxonomic Rank: Magnoliopsida: Capparales: Brassicaceae
Synonym(s): dame's rocket, dames violet, mother-of-the-evening
Native Range: Central and Southern Europe (BAIL);

Appearance
Hesperis matronalis is an herbaceous, biennial forb that grows up to 4 ft. (1.2 m) in height. It may be included in native wildflower mix packets. Always check the list of species in wildflower mixes.
Foliage
The alternate leaves are broadly lanceolate and sessile or born on short petioles. Leaves are 2-6 in. (5-15 cm) long and hairy.
Flowers
The showy, fragrant flowers vary in color from white to purple or pink and develop in the late spring. Flowers develop in clusters on 3 ft. (1 m) tall stalks.
Fruit
The siliques (long slender fruits) are 2-4 in. (5-10 cm) in length and contain a large number of seeds.
Ecological Threat
Many people mistakenly believe Hesperis matronalis is a native wildflower. It may be included in native wildflower mix packets. Always check the list of species in wildflower mixes. Habitats invaded by this plant include open woodlands, prairies, roadsides, ditches, and other disturbed areas where native plants are crowded out. Hesperis matronalis was introduced from Europe as an ornamental around the time of European settlement. It continues to be widely used as an ornamental and can be found throughout North America.

Identification, Biology, Control and Management Resources

Selected Images from Invasive.orgView All Images at Invasive.org


Flower(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); Hesperis matronalis (dame's rocket)
Rob Routledge, Sault College, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Mark Frey, The Presidio Trust , Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Mark Frey, The Presidio Trust , Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Mark Frey, The Presidio Trust , Bugwood.org
Additional Resolutions & Image Usage

Stem(s);
Mark Frey, The Presidio Trust , 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
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Antietam National Battlefield (Maryland)
Harpers Ferry National Historical Park (West Virginia)
Indiana Dunes National Lakeshore (Indiana)
Rocky Mountains National Park (Colorado)
Shenandoah National Park (Virginia)



Invasive Listing Sources:
City of Ann Arbor Michigan Parks and Recreation
Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
Connecticut Invasive Plant Working Group
Faith Campbell, 1998
Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
Indiana Native Plant and Wildflower Society
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
Mid-Atlantic Exotic Pest Plant Council, 2005
New Jersey Department of Agriculture, Division of Plant Industry, 2004
Pennypack Ecological Restoration Trust, Pennsylvania.
Tennessee Exotic Pest Plant Council