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Sporobolus wrightii - Scribn.

Common Name Big Sacaton
Family Poaceae
USDA hardiness 6-9
Known Hazards None known
Habitats Mesas and valleys[236 ]. It is found mainly on low alluvial flats, bottomlands, and arroyos subject to flooding at elevations from 600 - 1,500 metres[1050 ].
Range Central and southern N. America - California to Utah and Oklahoma, south to Arizona, New Mexico, Texas and northern Mexico
Edibility Rating    (2 of 5)
Other Uses    (2 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Moist Soil Wet Soil Full sun
Sporobolus wrightii Big Sacaton


Matt Lavin from Bozeman, Montana, USA wikimedia.org
Sporobolus wrightii Big Sacaton
Patrick Alexander from Las Cruces, NM Creative Commons Zero, Public Domain Dedication

 

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Summary

Big sacaton produces abundant, sand-like grains that were a staple food for Native peoples of the Southwest. The grains are easy to collect, nutritious, and versatile in cooking, especially when boiled into porridges or broths. Although it is not a major modern food crop, its ecological and cultural value make it an important traditional resource in desert and semi-desert regions. Sporobolus wrightii is an evergreen, perennial grass that forms dense clumps up to 90cm in diameter. It is a coarse, upright plant with culms 90 - 250cm tall[277 , 1050 ]. The plant is often used in revegetation and soil stabilization projects in southwestern N. America.


Physical Characteristics

 icon of manicon of flower
Sporobolus wrightii is an evergreen Perennial growing to 1.5 m (5ft) by 1.5 m (5ft).
See above for USDA hardiness. It is hardy to UK zone 7 and is not frost tender. The flowers are pollinated by Wind.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: neutral and basic (mildly alkaline) soils and can grow in very alkaline and saline soils.
It cannot grow in the shade. It prefers moist or wet soil.

UK Hardiness Map US Hardiness Map

Synonyms

Homotypic Synonyms: S. airoides var. wrightii (Scribn.) Gould. Heterotypic Synonyms: Bauchea karwinskyi E.Fourn. Epicampes crassiculmis Piper. S. altissimus Vasey ex Brandegee. S. altissimus var. minor Vasey. S. eminens J.Presl. S. expansus Scribn. S. schaffneri Mez. Vilfa eminens (J.Presl) Steud.

Plant Habitats

Edible Uses

The grains of big sacaton are edible and were a valued food source for Native Americans, much like those of the closely related alkali sacaton (S. airoides), to which this plant is nearly identical. The tiny, sand-like seeds are nutritious, pleasantly flavored, and easy to harvest and process. They were cooked into mushes or porridges, or ground into flour. Boiling quickly softens the grains and produces a rich, golden-brown broth or hearty porridge. Toasting adds flavor but doesn’t soften the seeds as effectively. The grains ripen in late summer to autumn, often lingering into early winter, though most fall earlier [2-3]. As with all grasses, only healthy, mold-free grains should be gathered, since infected seeds may harbor toxic molds such as ergot (Claviceps species). Cooking does not remove ergot toxins, so careful selection is essential. A few grasses in the region also contain cyanogenic glycosides, which boiling can reduce [2-3]. Big sacaton is a large perennial bunchgrass, growing 1–2 m tall and thriving in arid and semi-arid habitats such as dry washes and floodplains across the southwestern United States. Its impressive size and high seed yields made it one of the most important wild grasses for traditional food use [2-3].

References   More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.


None known

References   More on Medicinal Uses

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Other Uses

Agroforestry Uses: Big sacaton may be used in pure stands or as part of a rangeland seeding mix for highly alkaline soils. It is useful for revegetating saline soils throughout the Southwest of N. America. It performs well as a grass hedge terrace or windstrip for erosion control. It helps stabilize watershed structures, stream banks and flood plain areas. Big sacaton is also useful for wildlife cover[277 ]. The plant is important for impeding erosion in areas where flash floods occur[1050 ].

Special Uses

References   More on Other Uses

Cultivation details

The plant is found in the wild primarily on heavier soils in lowland or wetland sites. It is tolerant of highly alkaline and saline soil and can tolerate poorly drained soils and seasonally flooded areas. It is also found in open areas such as rocky slopes, plateaus, and mesas[277 ]. It generally grows on sand, sandy loam, silty clay loam, and saline soils[1050 ]. Plants are top-killed by fire, they usually regrow freely from the roots unless the fire has been hot enough to damage them[1050 ]. USDA Hardiness Zone: 6–9. Weed Potential: Big sacaton is not generally considered an invasive weed; instead, it is valued for erosion control, rangeland restoration, and forage production. Its dense root systems help stabilize soil in dry landscapes.

References   Carbon Farming Information and Carbon Sequestration Information

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Plant Propagation

Seed - sow spring in a greenhouse and only just cover the seed. Germination should take place within 2 weeks. Prick out the seedlings into individual pots when they are large enough to handle and plant them out in the summer if they have grown sufficiently. Otherwise, grow them on in a greenhouse for their first winter and plant them out in late spring of the following year. Division in spring. Larger divisions can be planted directly into their permanent positions. We have found it best to pot up the smaller divisions and grow them in a lightly shaded position in a cold frame, planting them out once they are well established in the summer.

Other Names

If available other names are mentioned here

Big Sacaton (Sporobolus wrightii Munro ex Scribn. = Sporobolus airoides (Torr.) Torr. var. wrightii (Munro ex Scribn.) Gould)

Native Range

Native to: Arizona, California, Mexico Central, Mexico Northeast, Mexico Northwest, New Mexico, Oklahoma, South Carolina, Texas, Utah. Introduced into: Egypt.

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it's worth checking.

Big sacaton is not generally considered an invasive weed; instead, it is valued for erosion control, rangeland restoration, and forage production. Its dense root systems help stabilize soil in dry landscapes.

Conservation Status

IUCN Red List of Threatened Plants Status : Not available

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Sporobolus airoidesAlkali SakatonPerennial0.8 -  LMHNDM10 
Sporobolus asperifolius Perennial0.3 -  LMND10 
Sporobolus caroliFairy GrassPerennial0.4 -  LMNM10 
Sporobolus contractusSpike DropseedPerennial0.8 -  LMNM101
Sporobolus cryptandrusSand DropseedPerennial1.0 4-8  LMNDM301
Sporobolus fimbriatusPerennial Dropseed. Dropseed grassPerennial1.2 10-12 FLMHSNDMWe202
Sporobolus flexuosusMesa DropseedPerennial0.0 -  LMNDM10 
Sporobolus giganteusGiant DropseedPerennial2.0 -  LMNDM20 
Sporobolus indicusSmut Grass, Rat-tail grass, West Indian dropseedPerennial0.0 0-0  LMNDM111
Sporobolus pallidus Perennial0.0 -  LMNDM10 

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

 

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Links / References

For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.

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