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Cottongrass

Eriophorum

Also called Bog Cotton, Cottongrasses, Cottonsedges

Cottongrass
Photo: Rob Bendall (Highfields), Attribution

Eriophorum, or cottongrass, is a genus of perennial sedges that form tufts in bogs, fens and cold northern meadows. Its feathery white seed heads are the key feature, and it does best in wet, cool, acidic conditions.

Family
Cyperaceae (Cyper family)
Grows as
Grass
Light
Full sun, Part shade
Water
Keep the soil constantly wet, with roots standing in water or saturated.
Soil
Acidic, peaty or boggy soil, or a wet mix rich in organic matter.
Temperature
Cool to cold conditions suited to temperate and arctic regions; most species tolerate hard winters.
How easy
Moderate

About

Eriophorum (cottongrass, cotton-grass or cottonsedge) is a genus of flowering plants in the family Cyperaceae, the sedge family. They are found in the cool temperate, alpine, and Arctic regions of the Northern Hemisphere, primarily in the middle latitudes of North America, Europe, and Asia.

Where it grows

Eriophorum species are found in the cool temperate, alpine, and Arctic regions of the Northern Hemisphere, primarily in the middle latitudes of North America, Europe, and Asia.

Uses

Paper and the wicks of candles have been made of its fiber, and pillows stuffed with the same material. The leaves were formerly used in treating diarrhea, and the spongy pith of the stem for the removal of tapeworm.

Other Eriophorum plants

Slender cottongrass

Text excerpted from the Wikipedia article Eriophorum 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.

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