Himalayan balsam USDA PLANTS Symbol: IMGL
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Impatiens glandulifera Royle

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Taxonomic Rank: Magnoliopsida: Geraniales: Balsaminaceae
Native Range: Trop. Asia (GRIN);

Appearance
Impatiens glandulifera is a succulent annual than can be 3-10 ft. (0.9-3 m) tall. The stems are purple tinged, hollow and hexagonally angled.
Foliage
The foliage is opposite or whorled. Leaves are lanceolate to lance-ovate with acuminate tips. Leaves are simple, serrate and 6 in. (15.2 cm) long.
Flowers
Flowering occurs from June to October. The pink, irregular, solitary flowers appear on axillary stalks.
Fruit
Fruits are five chambered capsules that, when mature, explode expelling seeds forcefully. Each plant produces about 800 seeds.
Ecological Threat
Impatiens glandulifera occurs in areas with high soil moisture, such as riparian areas. It is tall for an annual plant, has a fast growth rate, reseeds aggressively and outcompetes native vegetation. Plants are partially shade tolerant. It is native to India.

Identification, Biology, Control and Management Resources

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


Flower(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); Jan Samanek next to the plant for scale
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Barbara Tokarska-Guzik, University of Silesia, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Barbara Tokarska-Guzik, University of Silesia, Bugwood.org
Additional Resolutions & Image Usage

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

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

Flower(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Barbara Tokarska-Guzik, University of Silesia, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); in flower
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Stem(s); Stem
Michael Shephard, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Fruit(s);
Barbara Tokarska-Guzik, University of Silesia, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); in flower
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Barbara Tokarska-Guzik, University of Silesia, Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Michael Shephard, USDA Forest Service, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

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

Seed(s);
Jan Samanek, Phytosanitary Administration, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Leslie J. Mehrhoff, University of Connecticut, 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.


Invasive Listing Sources:
Native Plant Society of Oregon, 2008