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Summary
Amaranthus torreyi, or Torrey’s amaranth, is a native desert species with traditional use as a leafy vegetable and seed crop. It is less widespread than redroot or Palmer’s amaranth but still provides excellent nutrition where it grows. The young leaves can be cooked as greens, and the seeds offer a concentrated, protein-rich food source. Although not considered a major agricultural weed, Torrey’s amaranth is opportunistic in sandy or rocky desert habitats. For foragers in the American Southwest, it represents a dependable seasonal food source tied closely to summer rainfall and autumn harvests.
Physical Characteristics
Amaranthus torreyi is a ANNUAL growing to 0.8 m (2ft 7in) at a fast rate.
See above for USDA hardiness. It is hardy to UK zone 7 and is frost tender. The species is monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and is pollinated by Wind. The plant is self-fertile.
It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil and can tolerate drought.
UK Hardiness Map
US Hardiness Map
Synonyms
Homotypic Synonyms: A. bigelowii var. emarginatus (Torr.) Uline & W.L.Bray. Amblogyna torreyi A.Gray.
Plant Habitats
Cultivated Beds;
Edible Uses
Edible Parts: Leaves Seed
Edible Uses:
Torrey’s amaranth provides edible leaves and seeds, as with most species in the genus. The young leaves are tender and nutritious, suitable for cooking like spinach or used in mixed salads when fresh. Their flavor is typical of amaranths—mild and green, sometimes slightly bitter if older. Boiling improves texture and reduces any harshness [2-3]. The seeds are the real value, as they are abundant and nutrient-dense. Small, shiny, and typically black, they can be toasted, boiled into porridge, ground into flour, or pressed into seed cakes. Like other amaranths, they are a complete protein source, making them especially valuable as a wild grain [2-3]. Edibility Rating: 4/5 – A good wild edible, though less abundant than other weedy species like A. retroflexus or A. palmeri [2-3]. Leaves - cooked[46, 85, 105, 161]. Used as a spinach. Seed - cooked[46, 85, 105, 161]. Very small and fiddly, but the seed is very nutritious. The seed can be cooked whole, and becomes very gelatinous like this, but it is rather difficult to crush all of the small seeds in the mouth and thus some of the seed will pass right through the digestive system without being assimilated[K].
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
References More on Other Uses
Cultivation details
We have very little information on this species but it should succeed as a spring-sown annual in Britain. The following notes are based on the general needs of the genus. Prefers a well-drained fertile soil in a sunny position[200]. Requires a hot sheltered position if it is to do well[K]. Plants should not be given inorganic fertilizers, see notes above on toxicity. Most if not all members of this genus photosynthesize by a more efficient method than most plants. Called the 'C4 carbon-fixation pathway', this process is particularly efficient at high temperatures, in bright sunlight and under dry conditions[196].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
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Plant Propagation
Seed - sow late spring in situ. An earlier sowing can be made in a greenhouse and the plants put out after the last expected frosts. Germination is usually rapid and good if the soil is warm[133]. A drop in temperature overnight aids germination[133]. Cuttings of growing plants root easily[206].
Other Names
If available other names are mentioned here
Torrey’s Amaranth (Amaranthus torreyi)
Native Range
NORTHERN AMERICA: United States (New Mexico, Texas, Arizona (west), California (southeast)), Mexico (Chihuahua, Coahuila de Zaragoza, Durango, San Luis Potosí, Sonora, Baja California (Norte), Baja California Sur, Guanajuato, Jalisco, Michoacán de Ocampo)
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.
Moderate weed potential. Unlike redroot or Palmer’s amaranth, Torrey’s amaranth is more localized and not globally invasive. Found naturally in sandy, rocky, or disturbed soils of the southwestern U.S. and northern Mexico. It self-seeds readily and can spread in disturbed desert soils, but it does not rank among the world’s major invasive weeds.
Conservation Status
IUCN Red List of Threatened Plants Status :
| Related Plants
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| Latin Name | Common Name | Habit | Height | Hardiness | Growth | Soil | Shade | Moisture | Edible | Medicinal | Other |
| Amaranthus acanthochiton | Greenstripe Amaranth | Annual | 0.5 |
7-10
| F | LM | N | DM | 2 | 0 | 0 |
| Amaranthus albus | Prostrate Pigweed | Annual | 0.7 |
4-10
| | LMH | N | M | 4 | 0 | 1 |
| Amaranthus bidentata | | Annual | 0.9 |
-
| | LMH | N | M | 2 | 1 | 1 |
| Amaranthus blitoides | Mat Amaranth | Annual | 0.2 |
4-10
| | LMH | N | M | 3 | 0 | 1 |
| Amaranthus blitum | Slender Amaranth, Purple amaranth | Annual | 1.0 |
4-8
| | LMH | N | M | 4 | 2 | 2 |
| Amaranthus campestris | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 1 | 1 |
| Amaranthus caudatus | Love Lies Bleeding | Annual | 2.0 |
4-8
| | LMH | N | DM | 4 | 1 | 2 |
| Amaranthus cruentus | Purple Amaranth, Red amaranth | Annual | 2.0 |
4-10
| | LMH | N | M | 5 | 2 | 2 |
| Amaranthus diacanthus | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus dubius | Spleen Amaranth | Annual | 1.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus fimbriatus | Fringed Amaranth | Annual | 0.6 |
5-10
| F | LM | N | DM | 5 | 0 | 0 |
| Amaranthus frumentaceus | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus graecizans | Spreading Pigweed, Mediterranean amaranth | Annual | 0.5 |
0-0
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus hybridus | Rough Pigweed, Slim amaranth | Annual | 2.0 |
5-12
| | LMH | N | M | 5 | 1 | 1 |
| Amaranthus hypochondriacus | Prince's Feather, Prince-of-wales feather | Annual/Perennial | 1.2 |
3-10
| | LMH | N | M | 4 | 3 | 2 |
| Amaranthus mangostanus | | Annual | 1.5 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus mitchellii | Boggabri Weed | Annual | 0.5 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus pallidiflorus | | Annual | 1.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus palmeri | Careless Weed | Annual | 0.9 |
6-12
| F | LMH | N | M | 5 | 0 | 1 |
| Amaranthus polygamus | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 1 | 1 |
| Amaranthus polystachyus | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus powellii | Powell's Amaranth | Annual | 1.5 |
5-11
| F | LMH | N | M | 5 | 0 | 1 |
| Amaranthus quitensis | Ataco | Annual | 1.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus retroflexus | Pigweed, Redroot amaranth, Wild Beet | Annual | 0.9 |
5-11
| | LMH | N | M | 5 | 2 | 2 |
| Amaranthus spinosus | Spiny Amaranth | Annual | 0.6 |
4-11
| | LMH | N | M | 2 | 3 | 1 |
| Amaranthus standleyanus | Indehiscent Pigweed | Annual | 0.7 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus tenuifolius | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus thunbergii | Thunberg's Pigweed, Thunberg's amaranthus | Annual | 0.5 |
0-0
| | LMH | N | M | 2 | 0 | 1 |
| Amaranthus tricolor | Chinese Spinach, Joseph's-coat, Fountain Plant, Tampala , Summer Poinsettia | Annual | 1.0 |
3-11
| M | LMH | N | M | 3 | 1 | 2 |
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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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Expert comment
Author
(A.Gray.)Benth. ex Watson.
Botanical References
43235
Links / References
For a list of references used on this page please go here
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Subject : Amaranthus torreyi
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