WHERE’S WILDLIFE • GRASS, SEDGE & RUSH FIELD GUIDE

Tawny Cottongrass

Eriophorum virginicum

Despite its name, this native wetland plant belongs to the sedge family. Its compact flowering heads develop cottonlike bristles as the fruits mature.

Tawny Cottongrass in flower. Select the photograph for a closer view.

NATIVE • NORTH AMERICA

At a glance

Family: Cyperaceae (sedges)
Life cycle: Perennial
Height: About 16–48 inches
Habitat: Bogs, peaty wetlands and conifer swamps

Sightings map

Explore reported observations. Sightings are not a complete range map.

How to recognize it

Key identification clues

  • Several short-stalked spikes crowd together into a compact terminal head.
  • Long, leafy bracts extend from beneath the flower clusters.
  • Fruiting bristles may become pale yellow-brown to coppery.
  • Narrow leaves accompany upright stems.

Where and when to look

Look in sunny, wet peatlands, bog openings and wet meadows. Fruiting heads are often present from July through September, depending on location and season.

Compare & confirm

Compare the leafy bracts and clustered spikes with other cottongrasses. White Beaksedge can look similar in flower, but lacks the conspicuous long bracts and cottony appearance.

A closer look

Flowers & fruit

Threadlike bristles surround the tiny flowers and remain with the fruits. The photograph shows the pale flowering stage, before the familiar mature cottony head develops.

Leaves & stems

The few narrow leaves may bend or droop. Stems are smooth and weakly angled to nearly round. Photograph the whole plant as well as its head to capture these useful details.

Field photographs

1 field photograph. Select the image to enlarge it.

Range & sightings

Explore submitted observations for a view of this species’ reported distribution.

Observation maps show submitted records, not every place the plant occurs. Follow local access rules when visiting a site.

Keep learning

Explore more grasses, sedges and rushes in the field guide.

Sources & further reading

Photograph and species identification: Brian Woolman, Where’s Wildlife.

Minnesota Wildflowers: Tawny Cottongrass · West Virginia DEP: Tawny Cottongrass

Comments & Identification Feedback

Spotted a possible identification error or have an observation to share? Leave a comment below. For an ID correction, include the photo filename and the features that support your suggestion.

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