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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Calamagrostis coarctata

Calamagrostis coarctata (Torr.) Eaton

Arctic Reedgrass

Poaceae (Grass Family)

Synonym(s): Calamagrostis cinnoides

USDA Symbol: CACO71

USDA Native Status: L48 (N)


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Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Root Type: Fibrous
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Shape: Linear
Leaf Venation: Parallel
Inflorescence: Panicle
Fruit Type: Caryopsis
Size Notes: Up to about 5 feet tall.
Leaf: Green

Bloom Information

Bloom Color: Green
Bloom Time: Aug , Sep , Oct , Nov


USA: AL , CT , DC , DE , GA , KY , LA , MA , MD , ME , NC , NH , NJ , NY , OH , PA , RI , SC , TN , VA , WV
Canada: NS
Native Habitat: Bogs

Growing Conditions

Water Use: Medium
Light Requirement: Sun
CaCO3 Tolerance: Medium

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Calamagrostis coarctata in USDA Plants
FNA: Find Calamagrostis coarctata in the Flora of North America (if available)
Google: Search Google for Calamagrostis coarctata


Record Modified: 2023-06-01
Research By: TWC Staff

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