|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.org||View All Images at Invasive.org|
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:|
|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)