Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Eleocharis obtusa is a species of spikesedge known by the common name blunt spikerush. This plant is widely distributed across Canada and the United States, where it grows in wet areas such as riverbanks and moist forest floors. It is also a weed of rice paddies, especially when the rice plants are young sprouts. This is an annual spikesedge approaching half a meter in maximum height. It has many green cylindrical stems which are erect but weak and spongy. There may be thin, grasslike leaves toward the base of the plant, which are generally straw-colored. Atop each stem is a rounded or oblong spikelet containing at least ten flowers, each covered by an oval-shaped brown bract.

Plant type

Grass

Size

2 ft Tall

Form

Upright

Growth rate

Moderate

Calscape icon
Color

Yellow

Flowering season

Summer

Sun

Full Sun, Partial Shade

Water

High

Soil drainage

Standing

Soil description

Adaptable, tolerant of sand, loam and clay.

Site type

Wet soil of pond and lake Edges, marshes, often

Plant communities

Wetland-Riparian

Birds
Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 2 likely

Confirmed Likely

Thopeutis forbesellus