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Atriplex polycarpa - (Torr.) S.Watson

Common Name Cattle spinach
Family Amaranthaceae
USDA hardiness 8-10
Known Hazards Mealy scurf rubs off—dusty to handle; wear eye/respiratory protection when winnowing seed. Individuals with kidney-stone history (oxalates) or on nitrate-sensitive meds should avoid this plant as food. No member of this genus contains any toxins, all have more or less edible leaves. However, if grown with artificial fertilizers, they may concentrate harmful amounts of nitrates in their leaves. The seed contains saponins[240]. Although poisonous, saponins are poorly absorbed by the human body and so most pass through without harm. Saponins are quite bitter and can be found in many common foods such as some beans. They can be removed by carefully leaching the seed or flour in running water. Thorough cooking, and perhaps changing the cooking water once, will also normally remove most of them. However, it is not advisable to eat large quantities of food that contain saponins. Saponins are much more toxic to some creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish[K].
Habitats Native to the Mojave and Sonoran Deserts and adjacent arid valleys, fans, and alkaline flats of the southwestern U.S. (esp. southern California and Arizona) and into northwestern Mexico; common on disturbed, salty, and highly alkaline ground.
Range SW. U.S.A. to NW. Mexico. It is a shrub and grows primarily in the temperate biome.
Edibility Rating    (1 of 5)
Other Uses    (4 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care (info)
Half Hardy Well drained soil Moist Soil Full sun
Atriplex polycarpa Cattle spinach


Krzysztof Ziarnek, Kenraiz Creative Commons Attribution-Share Alike 4.0
Atriplex polycarpa Cattle spinach
Felagund Creative Commons Attribution-Share Alike 3.0

 

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Summary

A hardy, long-lived desert saltbush native to the Mojave and Sonoran regions, Atriplex polycarpa forms dense, gray-green shrubs that thrive on alkaline, saline, drought-prone soils where few other edibles succeed. It is outstanding for erosion control, wildlife cover, and site reclamation, but it is a poor human food: foliage is intensely acrid and irritating unless subjected to heavy processing, and even then remains unappealing; seeds are likewise harsh. Historically, it has been cited as a last-resort or famine plant in parts of the Southwest. Atriplex polycarpa is a first-rate desert workhorse—stabilizing salty soils, withstanding heat, wind, and drought, and providing wildlife cover where few shrubs will grow. For human consumption, however, it is decidedly inferior: the leaves are intensely acrid and require multiple water changes to become barely edible; the seeds, though collectible in quantity, are harsh and acrid even after processing. Use this species for restoration, hedging, and xeriscape structure, not for the table.


Physical Characteristics

 icon of manicon of shrub
Atriplex polycarpa is an evergreen Shrub growing to 1 m (3ft 3in) by 1 m (3ft 3in) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 9 and is not frost tender. The flowers are pollinated by Wind.
It is noted for attracting wildlife.
Suitable for: light (sandy) and medium (loamy) soils, prefers well-drained soil and can grow in nutritionally poor soil. 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 dry or moist soil and can tolerate drought.

UK Hardiness Map US Hardiness Map

Synonyms

Homotypic Synonyms: Obione polycarpa Torr.

Plant Habitats

Edible Uses

Fresh leaves are much too acrid to consume; even with multiple changes of boiling water, they are barely palatable. Initial boils produce thick foam; continue boiling and changing the water until the foam subsides. Texture becomes acceptable, flavor remains poor (“spinach-like” notes overwhelmed by distasteful characteristics). Seeds have a starchy base with salty, woody, and terribly acrid overtones - also poor [2-3]. Edible Uses & Rating: Parts used: Leaves (historically boiled as greens), seeds (used when other foods were scarce). Edibility rating: 1/5 (emergency only). Hopi references mention leaves cooked as greens; ancestral use of the seeds during scarcity. Taste, Processing & Kitchen Notes: Leaves: Mandatory processing: Finely chop - boil hard - discard liquor - repeat until no foam; do not add directly to soups (they will taint the pot). Expect only marginal palatability after full treatment. Portion size: Small; irritating compounds (oxalates/saponins/nitrates) can provoke throat/mouth discomfort. Seeds: Harvest - Shake or strip utricles when dry in autumn; expect chaff and insect-damaged seeds. Processing: Thresh/winnow - boil (often two water changes) or toast, then boil to moderate acridity. Even with care, the flavor typically remains unpleasant. Safety & Cautions (Food Use): Chemistry: Leaves commonly accumulate oxalates, saponins, nitrates (and other salts). Processing is mandatory: Leaves: Finely chop - vigorous boil - discard liquor - repeat until foam stops; even then, expect poor flavor and potential irritation—do not use as soup greens. Seeds: Thresh/winnow - boil (often two water changes) or toast then boil to reduce harshness; results remain marginal. Who should avoid: Individuals with a kidney-stone history (oxalates) or on nitrate-sensitive meds should avoid this plant as food. Recommendation: Treat as non-food for routine use; survival/emergency only. Bottom line: This species is not recommended for routine foraging; reserve for survival scenarios [2-3]. Look-Alikes & Confusion Risks: Other Atriplex shrubs (e.g., A. canescens, A. lentiformis)—similar gray scurf and salty leaves; all share the same cautions. Allenrolfea occidentalis (picklebush)—jointed fleshy stems rather than leafy shoots; different genus and use profile.

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

Design uses: Windbreak/hedge, glare and heat-tolerant plants for desert plantings, saline bioswale edges, stabilization of alkali flats. It is outstanding for erosion control, wildlife cover, and site reclamation, but it is not a suitable food source for humans. Roots: Deep, wide-spreading root system; excellent soil binder in loose, salty substrates. Ecology & Wildlife: Cover: Dense branching offers nesting and refuge for small birds and desert mammals. Forage (wildlife/livestock): Browsed sparingly (secondary forage); high salts/oxalates limit intake. Soil: Strong salinity and alkalinity tolerance, erosion control, and rhizosphere salt sequestration via bladder hairs; valuable in reclamation of saline road margins, tailings, and alkali sinks. Pollination: Primarily wind-pollinated (inconspicuous flowers). Companions (desert guilds): Creosote bush (Larrea), bursage (Ambrosia dumosa), saltbush guilds (Atriplex spp.), iodine bush (Allenrolfea), saltgrass (Distichlis), seepweed (Suaeda).

Special Uses

References   More on Other Uses

Cultivation details

Growing Conditions: Light: Full sun only. Soil: Sandy to gravelly loams or fine desert alluvium; high pH and salinity tolerated (pH 7.5–9+). Performs in calcareous soils. Moisture: Very drought-tolerant once established; also tolerates episodic flooding in desert washes. Climate/heat: Hot-summer desert shrub; handles reflected heat and desiccating wind. Hardiness: Approx. USDA 8–10 (some stands persist in colder basins given perfect drainage and winter dryness). Native to the Mojave and Sonoran Deserts and adjacent arid valleys, fans, and alkaline flats of the southwestern U.S. (esp. southern California and Arizona) and into northwestern Mexico; common on disturbed, salty, and highly alkaline ground. Size & Landscape Performance: Mature size: Typically 0.5–2 m tall × 0.6–2.5 m wide; slower and smaller on extreme sites. Growth rate: Moderate once established (first year slow while rooting). Longevity: Long-lived shrub under natural desert regimes. Cultivation (Horticulture): Site prep: Minimal; avoid soil amendments—fertility can increase nitrate/oxalate accumulation in leaves. Irrigation: Establish with light, infrequent watering. After year 1, water deeply but rarely (e.g., monthly in the hottest season for faster growth). Over-irrigation encourages lush, weak growth and higher nitrate loads. Nutrition: Do not fertilize; the plant is adapted to lean soils. Pruning: Light shaping only; avoid hard cuts into old wood. Containers: Not recommended beyond short-term nursery culture; wants root run and mineral soils. Seasonality (Phenology): Vegetative growth: Spring surge after winter/spring moisture; maintains foliage through summer drought with reduced growth. Flowering: Mainly summer. Fruit/seed: Late summer–autumn (desert heat can advance timing). Best “edible” window: If attempting greens, use very young shoots only—and still expect heavy processing. Identification & Habit Form: Multi-stemmed, rounded shrub, typically 0.5–2 m tall and similar spread; twiggy and densely branched. Foliage: Small, alternate, oval to spatulate leaves; gray-silvery “scurf” (inflated bladder hairs) gives a mealy cast and often visible surface salt. Leaves are persistent in mild winters (semi-evergreen) but can shed in drought. Flowers/Fruit: Inconspicuous wind-pollinated flowers; female flowers enclosed by a pair of bractlets that harden into the dry, papery utricles around the seed. Fruiting late summer into autumn. Roots: Deep, wide-spreading root system; excellent soil binder in loose, salty substrates. Pests & Problems: Insects: Seed weevils/borers can perforate seeds (common when collecting). Physiological: Over-watering leads to rank growth, possible dieback; excessive fertility leads to elevated nitrates.

References   Carbon Farming Information and Carbon Sequestration Information

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Plant Propagation

Seed: Collect dry utricles in late summer–autumn; dry further, then thresh and winnow. Dormancy: Variable; best results from fall sowing (natural cold/moist after-ripening) or 4–8 weeks cold-moist stratification before spring sowing. Sowing: Broadcast on the surface or barely cover (light helps), keep just moist until germination; avoid over-watering. Cuttings: Semi-ripe to semi-hardwood tip cuttings in warm weather with auxin and intermittent mist root fairly well; useful for clonal hedging. Direct seeding for restoration: Excellent; scratch in lightly on saline/alkaline sites prior to winter moisture. Site prep: Minimal; avoid soil amendments—fertility can increase nitrate/oxalate accumulation in leaves. Irrigation: Establish with light, infrequent watering; after year 1, water deeply but rarely (e.g., monthly in the hottest season if you want faster growth). Over-irrigation encourages lush, weak growth and higher nitrate loads. Nutrition: Do not fertilize; the plant is adapted to lean soils. Pruning: Light shaping only; avoid hard cuts into old wood. Containers: Not recommended beyond short-term nursery culture; wants root run and mineral soils.

Other Names

If available other names are mentioned here

Cattle spinach, Desert saltbush

Native Range

Arizona, California, Mexico Northwest, Nevada, Utah

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.

Low in most settings. It establishes on bare, saline ground and can form local dominance, but it rarely invades mesic or fertile landscapes. Monitor in restoration plantings to prevent exclusion of desirable associates.

Conservation Status

IUCN Red List of Threatened Plants Status : Not available

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Atriplex argenteaSilvery Orach, Silverscale saltbush, Stalked saltbushAnnual0.5 4-9  LMNM322
Atriplex argentea expansaSilverscale SaltbushAnnual0.6 -  LMNM20 
Atriplex californicaCalifornia Orach, California saltbushPerennial0.1 7-10 MLMNDM303
Atriplex canescensGrey Sage Brush, Fourwing saltbushShrub1.8 3-9 MLMNDM313
Atriplex carnosaThickleaf OrachAnnual0.9 -  LMNDM20 
Atriplex cinereaGrey SaltbushShrub2.0 9-11 MLMNDM303
Atriplex confertifoliaShadscale, Shadscale saltbushShrub1.5 4-9 MLMNDM312
Atriplex coronataCrownscaleAnnual0.4 -  LMNDM20 
Atriplex dimorphostegia Annual0.2 -  LMNDM20 
Atriplex elegansWheelscale SaltbushAnnual0.2 0-0  LMNDM301
Atriplex glabriusculaScotland orache, Maritime saltbush, Frankton's saltbush, Northeastern saltbushAnnual0.3 0-0  LMNDM20 
Atriplex gmeliniiGmelin's saltbushAnnual0.5 0-0  LMNDM20 
Atriplex halimusSea Orach, SaltbushShrub2.0 7-10 MLMNDM513
Atriplex hastataHastate OrachAnnual0.8 0-0  LMNDM302
Atriplex hortensisOrach, Garden oracheAnnual1.8 5-9 FLMNM423
Atriplex lapathifolia Annual0.9 -  LMNDM30 
Atriplex lentiformisQuail Bush, Big saltbush, Quailbush,Shrub3.0 8-11 MLMNDM213
Atriplex littoralisGrassleaf oracheBiennial0.7 4-11 FLMHNDM200
Atriplex maximowiczianaMaximowicz's saltbushPerennial0.8 0-0  LMNDM20 
Atriplex mucronata Annual0.4 -  LMHNDM20 
Atriplex nummulariaGiant Saltbush, Bluegreen saltbushShrub3.5 7-10 MLMNDM323
Atriplex nuttalliiNuttall's SaltbushShrub0.9 5-9 MLMNDM402
Atriplex obovataMound SaltbrushShrub1.0 5-9 MLMHNDM303
Atriplex patulaSpreading Orach, Spear saltbushAnnual0.8 0-0  LMNM310
Atriplex powelliiPowell's SaltweedAnnual0.7 4-9  LMNDM302
Atriplex roseaTumbling or redscale saltweedAnnual0.6 3-10 FLMNDM222
Atriplex saccariaSack SaltbushAnnual0.3 5-9  LMNDM300
Atriplex semibaccataAustralian Saltbush. Australian saltbush, Creeping saltbushShrub0.5 8-11 FLMHNDM303
Atriplex serenanaBractscale, Davidson's bractscaleAnnual3.0 8-11  LMNDM300
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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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(Torr.) S.Watson

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