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Plains reedgrass

Calamagrostis montanensis

Plains reedgrass
Photo: Matt Lavin, CC BY-SA 2.0

Plains reedgrass is a native North American perennial grass that spreads by rhizomes to form sod, growing up to about 60 cm tall. It suits cool, dry, open sites where its deep roots can hold soil.

Family
Poaceae (Grass family)
Grows as
Grass, Perennial
Light
Full sun, Part shade
Water
Water well while establishing, then needs little supplemental water once roots are deep.
Soil
Well-drained soil, tolerates poor and sandy or gravelly soils.
Temperature
Hardy in cold winters, roughly to -30 °C or colder; struggles in hot humid summers.
How easy
Easy
Native range
W. & C. Canada to NW. & NC. U.S.A.
Climate
temperate

About

Calamagrostis montanensis is a species of grass known by the common names plains reedgrass and prairie reedgrass. It is native to North America, where it is found across Canada from British Columbia to Manitoba and south to Colorado in the United States.

This plant is a perennial grass growing a single stem, not forming a tuft or clump. It grows up to 60 centimeters tall. It has a network of thin rhizomes and roots that hold the soil, forming sod. The roots have been observed to penetrate over a meter deep in the soil. The stiff, rolled leaves are mostly located around the base of the stem and reach up to 15 centimeters long by just a few millimeters wide. The inflorescence is a narrow panicle up to 10 centimeters long. The spikelet contains one flower. The plant reproduces vegetatively by sprouting from its rhizome and sexually by its wind-dispersed seed.

Other Calamagrostis plants

European beachgrass · American beachgrass · Beachgrass · Feather reed grass · Purple Reedgrass · Bolander's reedgrass · Shorthair reedgrass · Bluejoint · Purple smallreed · Calamagrostis carchiensis · Wood Small Reed · Leafy reedgrass

Text excerpted from the Wikipedia article Calamagrostis montanensis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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