Himalaya blackberry USDA PLANTS Symbol: RUAR9
U.S. Nativity: Exotic
Habit: Shrub or Subshrub
Rubus armeniacus Focke

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Taxonomic Rank: Magnoliopsida: Rosales: Rosaceae
Synonym(s): Himalayan blackberry
Native Range: Europe

Himalayan blackberry is a perennial shrub native to Eurasia. Stems grow to 15 ft. (4.6 m) before arching and then trailing over the ground for up to 40 ft. (12.2 m). As stems touch the ground they root at the nodes, producing a dense thicket. The leaves of the prima cane (first year shoots) are 2.8-7.9 in. (7-20 cm) long and palmately compound with 5 leaflets. No flowers are produced on the first year’s growth. In the second year several side shoots are produced (flora canes) having smaller leaves with 3 leaflets. The leaflets are oval and toothed with thorns along the underside of the mid-rib. Flowering occurs in late spring to early summer; when white to pale pink flowers develop on the flora canes. Flowers have 5 petals, numerous stamens and are 0.8-1 in. (2-2.5 cm) in diameter. Fruits are an aggregate of drupelets that are black, when mature, and 0.5-0.8 in. (1.2-2 cm) in diameter. Himalayan blackberry was introduced into North America in 1885 as a cultivated crop and occurs in pastures, riparian areas, wastelands, fence lines and right-of-ways.

Identification, Biology, Control and Management Resources

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


Feature(s); thorns and leaf undersides
Forest and Kim Starr, Starr Environmental, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s); fruit
Forest and Kim Starr, Starr Environmental, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
John M. Randall, The Nature Conservancy, Bugwood.org
Additional Resolutions & Image Usage

Stem(s); prickly and angled stem
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
Additional Resolutions & Image Usage

Foliage; Branch
Forest and Kim Starr, Starr Environmental, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s); fruits
Eric Coombs, Oregon Department of Agriculture, 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.

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U.S. National Parks where reported invasive:
Glen Canyon National Recreation Area (Utah)
Grand Canyon National Park (Arizona)
Redwood National Park (California)
Sequoia and Kings Canyon National Parks (Californina)
Yosemite National Park (California)



Invasive Listing Sources:
California Invasive Plant Council
Faith Campbell, 1998
Georgia Exotic Pest Plant Council
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Mid-Atlantic Exotic Pest Plant Council, 2005
Native Plant Society of Oregon, 2008
New Jersey Department of Agriculture, Division of Plant Industry, 2004
Pacific Northwest Exotic Pest Plant Council, 1998
Reichard, Sarah. 1994.  Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.