Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Sporobolus contractus is a species of grass known by the common name spike dropseed. It is native to western North America, including the southwestern United States and northern Mexico. It grows in desert and plateau habitat, in woodlands, scrub, and dry, sandy, open areas. It is a perennial bunchgrass forming a clump or tuft of stems reaching up to 1. 2 meters in maximum height. The stem bases are thick and sheathed by the hairless leaves. The inflorescence is dense, cylindrical, and narrow. It is a spikelike series of many small whitish or grayish spikelets.

Plant type

Grass

Size

3 - 7 ft Tall

Calscape icon
Color

White

Sun

Full Sun, Partial Shade

Propagation

For propagating by seed: Soak in 71% H2 S04 4 mins. (2-4 okay; then soak in 1-2% potassium nitrate for 24 hrs. Germinate at high diurnal fluctuation, room temperature (60.8° to 75.2°) and 95°F. One mo. stratification instead of acid treatment may also give good germination (Toole 1941).

Sunset Zones

1, 2*, 3, 7*, 14*, 15*, 16*, 18*, 19*, 20*, 21*, 22*, 23*

Site type

Wet places

Plant communities

Creosote Bush Scrub, Pinyon-Juniper Woodland

Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 1 likely

Confirmed Likely

Sandhill Skipper

Polites sabuleti