• Spires of Cedar Mesa sandstone in Chesler Park (Needles District)

    Canyonlands

    National Park Utah

There are park alerts in effect.
show Alerts »
  • Temporary Four-Wheel Drive Road Closures

    Due to road damage, some four-wheel-drive roads are impassable. More »

Grasses

photo: Native bunch grasses in the Needles District
Native bunch grasses in the Needles District
NPS Photo by Neal Herbert
 

Grasses grow throughout Canyonlands. Individual grasses sprout almost anywhere there is soil. Grasslands form in areas where wind-blown sediment and erosion have created a layer of soil that is several feet thick. Small grasslands form in potholes that have filled with dirt. Most desert grasses can be fit into two groups: bunch and sod-forming.

Bunch grasses are classic desert plants that occur in scattered clumps. This growth pattern reduces competition for limited soil nutrients and water. Indian ricegrass and needle-and-thread are bunch grasses. The relatively large ricegrass seeds are rich in protein and were an important source of food for Native Americans. Needle-and-thread has a sharp seed attached to a wound “thread” that drives the seed into the ground as it unwinds. Both of these grasses are perennial, becoming dormant during droughts. Ricegrass plants have been known to live over 100 years.

Sod forming grasses are what most people have in their yards. Galleta and blue grama are sod-forming perennials native to Canyonlands, and usually grow together. Unlike most desert grasses, galleta can withstand heavy grazing and is important forage for bighorn sheep and mule deer. The seed head of blue grama looks like eyelashes.

Cheatgrass is a sod-forming grass that was accidentally brought to the United States in the 1800s. This European annual is now established throughout the west and frequently takes over areas disturbed by fire or livestock grazing.

Did You Know?

Kangaroo Rat

One animal uniquely adapted to life in the desert is the kangaroo rat. This rat lives its entire life consuming nothing but plant matter. Its body produces water by metabolizing the food it eats. More...