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American mannagrass

Glyceria grandis

Also called Reed manna grass, American Glyceria, Common Tall Mannagrass, Giant Glyceria, Giant Mannagrass, Reed Mannagrass, Tall Mannagrass

American mannagrass
Photo: Matt Lavin from Bozeman, Montana, USA, CC BY-SA 2.0

American mannagrass is a tall, rhizomatous perennial grass native to Canada and the USA that grows in wet soil or shallow water. It is best grown with its roots kept moist or submerged, in full sun to part shade.

Family
Poaceae (Grass family)
Grows as
Grass
Light
Full sun, Part shade
Water
Keep roots constantly wet or submerged in shallow water.
Soil
Moist loam or mud, or shallow water.
Temperature
Hardy in cool temperate climates; tolerates cold winters, protect from prolonged hard freeze in pots.
How easy
Easy
Native range
Subarctic America to U.S.A.
Climate
temperate

About

Glyceria grandis is a species of grass known by the common name American mannagrass. It is native to Canada and the United States, where it is widespread in distribution. It is most commonly found in wet areas such as riverbanks and ponds.

Other Glyceria plants

Small floating mannagrass · Water mannagrass · Davy mannagrass · Reed mannagrass

Text excerpted from the Wikipedia article Glyceria grandis 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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