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Atriplex powellii - S.Watson.

Common Name Powell's Saltweed
Family Chenopodiaceae
USDA hardiness 4-9
Known Hazards 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.
Habitats Alkaline flats and badlands, Montana to S. Alberta, south to Arizona and New Mexico[204]. 1500 - 1800 metres in Arizona, often on denuded land.
Range Central and western N. America.
Edibility Rating    (3 of 5)
Other Uses    (2 of 5)
Weed Potential Yes
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Well drained soil Moist Soil Full sun
Atriplex powellii Powell


Atriplex powellii Powell

 

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Summary

A US native, herbaceous saltbush of alkaline lowlands from the Southwest north to Canada. Annual to short-lived perennial, mealy (scurfy) leaves, inconspicuous flowers late summer–autumn. Traditionally used as both a potherb and a seed plant. Edibility. Leaves boiled and eaten as greens by several Native American groups; Zuni ground the seeds with corn, formed patties, and steamed them. As with other Atriplex, expect salinity/oxalates; cook and eat in moderation. Edibility rating: 3/5 (decent when well prepared, but not gourmet).


Physical Characteristics

 icon of manicon of flower
Atriplex powellii is a ANNUAL growing to 0.7 m (2ft 4in) by 0.7 m (2ft 4in).
See above for USDA hardiness. It is hardy to UK zone 5. It is in flower from July to September, and the seeds ripen from August to October. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). and is pollinated by Wind.
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

A. philonitra.

Plant Habitats

 Cultivated Beds;

Edible Uses

Edible Parts: Leaves  Seed
Edible Uses:

Leaves boiled and eaten as greens by several Native American groups; Zuni ground the seeds with corn, formed patties, and steamed them. As with other Atriplex, expect salinity/oxalates; cook and eat in moderation [2-3]. Edibility rating: 3/5 (decent when well prepared, but not gourmet). Parts used & preparation: Leaves: Boil (often in one or more changes of water) to temper saltiness/irritants; use as a side green. Seeds (utricles): Dry heads, thresh; winnow; grind with corn or on their own; steam into cakes or simmer as mush. Expect a grain-like, slightly alkaline character; change water if harsh [2-3]. Leaves and young plants - cooked[161, 177] and used as greens[216, 257]. A salty flavour, they are often used as a flavouring for other foods[257]. Seed - cooked[161, 177]. Used in piñole or ground into a meal and used as a thickener in making bread or mixed with flour in making bread[257]. Atriplex species often accumulate oxalates, nitrates, selenium, and salts. Favor young leaves, boil and discard cooking water if harsh, and keep portions moderate—especially for people with kidney issues or on low-oxalate/low-sodium diets. Seeds are generally safer than leaves, but the bractlets/utricles range from papery to very tough; plan on threshing, winnowing, grinding, and sometimes pre-boiling to get a pleasant result. Lookalikes & cautions. Other desert oraches; same oxalate/nitrate precautions—boil and moderate use. Traditional uses: Pima potherb (“salt greens”). Harvest tips: Take only young, tender shoots; if very briny/irritating, blanch, refresh, then finish cooking.

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

Good for xeric/heavy-salt sites and revegetation. Suitable for salt-tolerant cover on degraded alkaline soils.

Special Uses

References   More on Other Uses

Cultivation details

Season & phenology. Flowers in late summer to early autumn; seed set continues until hard frosts. Identification notes. Herbaceous, scurfy, often gray-green; sessile to short-petioled leaves; female flowers enclosed in paired bractlets (typical Atriplex). Best recognized by habitat and overall orache look rather than one single field mark. Habitat & distribution. Alkaline lowlands, playas, basin bottoms, disturbed saline soils from northern Arizona/New Mexico northward. Growing conditions & cultivation. Full sun; tolerates alkaline/saline, droughty, low-fertility soils; avoid rich, wet substrates. Good for xeric/heavy-salt sites and revegetation. Hardiness. Annual/short-lived—behaves reliably where summers are warm; seed can overwinter broadly; functionally hardy in USDA 4–9 (as a reseeding annual). Size & habit. Typically 20–70 cm tall, branching, upright to somewhat sprawling. Weed potential. Low–moderate. Will self-seed on saline/disturbed ground but rarely a serious pest outside that niche. Lookalikes & cautions. Other oraches/saltbushes; all accumulate oxalates/nitrates/selenium to varying degrees—boil and moderate portions; avoid frequent large servings, kidney issues, or high-nitrate sites (corrals, fertilized field edges).

References   Carbon Farming Information and Carbon Sequestration Information

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Plant Propagation

Propagation. By seed; sow shallow (2–5 mm) in spring or late autumn. Soak 12–24 h to leach salts; sow utricles whole or cleaned seed. Light improves germination; 15–25 °C. Thin to avoid legginess.

Other Names

If available other names are mentioned here

Atriplex powellii — Powell’s Orache / Saltweed.

Native Range

Alberta, Arizona, Colorado, Idaho, Montana, Nebraska, New Mexico, North Dakota, Oregon, Saskatchewan, South Dakota, Utah, Wyoming

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–moderate. Will self-seed on saline/disturbed ground but rarely a serious pest outside that niche.

Conservation Status

IUCN Red List of Threatened Plants Status :

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Atriplex argenteaSilvery Orach, Silverscale saltbush, Stalked saltbushAnnual0.5 4-9  LMNM322
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Atriplex littoralisGrassleaf oracheBiennial0.7 4-11 FLMHNDM200
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Atriplex nuttalliiNuttall's SaltbushShrub0.9 5-9 MLMNDM402
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Atriplex patulaSpreading Orach, Spear saltbushAnnual0.8 0-0  LMNM310
Atriplex polycarpaCattle spinachShrub1.0 8-10 MLMNDM104
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
12

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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Expert comment

Author

S.Watson.

Botanical References

204270

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