- Phalaris arundinacea is a cool-season perennial grass that grows to 6 ft. (1.7 m) tall. Reed canarygrass is variable in morphology, so characteristics may depend upon the habitat.
- Leaf blades are flat, 1-4 ft. (0.3-1.2 m) long, up to 0.75 in. (1.9 cm) wide, glabrous and taper gradually. The ligule is membranous (transparent) and long.
- The spreading flower/seed heads arise from hairless stems and can be green, purple, or brown in color and usually 3-6 in. (7.6-15.2 cm) in length. Flowering occurs from May to July.
- The inflorescence color changes from green to purplish to tan as the seeds mature. There are both sterile and fertile lemmas.
- Ecological Threat
- Phalaris arundinacea can quickly dominate wetlands, ditches, prairie potholes, and other sites with moist soil. It can exclude all other vegetation and is extremely difficult to eradicate once established. Nativity of this plant is debated; it is native to Europe and possibly parts of Asia, but it may also be native to the northwestern United States. Aggressive behavior that is exhibited in many parts of the central and western United States may be a result of escaped cultivars that were bred for vigor and quick growth.
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
- Commonwealth of Pennsylvania, Department of Conservation and Natural Resources, 1994.
- Connecticut Invasive Plant List
- EDDMapS Ontario
- Great Lakes Early Detection Network
- Illinois Invasive Plant List
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- Massachusetts Noxious Weeds
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Native Plant Society of Oregon, 2008
- New Hampshire Restricted Invasive Species
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: PHAR3
NPDN Pest: PCACHBA
NPDN Host: 22010
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|