Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Cyperus erythrorhizos is a species of sedge known by the common name redroot flatsedge. It is found throughout North America from central Canada to central Mexico. It is a plant of wet areas such as rivers and ditches, generally at low elevations. It gets its common and scientific names from the red color of its roots. This sedge grows to a maximum of a meter in height, but is usually quite a bit shorter. It may have a number of long, wispy leaves around the base of the plant. The flower cluster may contain one to several spikes, each spike containing 20 to over 100 spikelets. Each spikelet is light greenish brown to reddish brown and is made up of up to 30 leafed flowers. The fruit is a glossy achene about a millimeter long.

Plant type

Grass

Size

2 - 3 ft Tall

Form

Upright

Growth rate

Fast

Calscape icon
Color

Green

Flowering season

Summer

Sun

Full Sun

Water

High

Soil description

Prefers sandy or loamy soils. Does not grow well in clay soils.

Site type

Riverbanks, shores and wet places

Plant communities

Wetland-Riparian

Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 2 likely

Confirmed Likely

Javelin Moth

Bactra verutana

Dun Skipper

Euphyes vestris