The flowers appear at or near the end of the stem in cottony tufts. Tufts can be either white or coppery in hue and have long, slender bristles like a cotton ball.
The seeds are copper or brown in color, approximately three times as long as they are wide with many white bristles.
Tawny Cottongrass leaves are very narrow and flat with rough margins.
This cottongrass inhabits wetland ecosystems, favoring the saturated conditions of bogs and swampy areas.
The Tawny Cottongrass can propagate via both its rootstocks and its seeds. This species commonly invades poorly drained areas such as old cranberry bogs, where it is often considered a destructive weed. .