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Amaranthus palmeri - S.Watson.

Common Name Careless Weed
Family Amaranthaceae
USDA hardiness 6-12
Known Hazards No members of this genus are known to be poisonous, but when grown on nitrogen-rich soils they are known to concentrate nitrates in the leaves. This is especially noticeable on land where chemical fertilizers are used. Nitrates are implicated in stomach cancers, blue babies and some other health problems. It is inadvisable, therefore, to eat this plant if it is grown inorganically.
Habitats Waste places and fields at low elevations, also in interior valleys and deserts in California[71].
Range South-western N. America
Edibility Rating    (5 of 5)
Other Uses    (1 of 5)
Weed Potential Yes
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Moist Soil Full sun
Amaranthus palmeri Careless Weed


http://commons.wikimedia.org/wiki/User:Pompilid
Amaranthus palmeri Careless Weed
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913.

 

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Summary

The leaves, stems and seeds of Palmer amaranth or carelessweed are edible and highly nutritious. The leaves are cooked as a spinach. The seed is also cooked and then used with cereal flours in porridge and breads. It is native to most of the southern half of North America. Common names, including carelessweed, dioecious amaranth, Palmer's amaranth, Palmer amaranth, and Palmer's pigweed.


Physical Characteristics

 icon of manicon of flower
Amaranthus palmeri is a ANNUAL growing to 0.9 m (3ft) 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

Plant Habitats

 Cultivated Beds;

Edible Uses

Edible Parts: Leaves  Seed
Edible Uses:

Palmer’s amaranth is one of the most highly regarded wild amaranths, valued for both its leaves and seeds. The leaves, traditionally known as quelite (derived from the Nahuatl word for edible greens), are exceptionally good, often described as among the best-tasting wild leafy vegetables. Fresh leaves have a taste similar to spinach, but with a distinct character of their own. Brief boiling enhances the flavor while preserving their vivid green color, resulting in a soft yet not mushy texture. The broth from boiled leaves is equally vivid and palatable [2-3]. The seeds are outstanding in both nutrition and flavor. They are shiny, black, and very hard when raw, but toasting or boiling softens them. Toasted seeds pop lightly and develop a nutty, grain-like taste; boiled seeds turn into a hearty porridge in just 10–15 minutes. Seeds are highly nutritious, containing complete protein, and can be stored for long-term use. Processing is relatively easy, though the spiny chaff requires gloves for handling. One plant can yield large quantities of seed, making Palmer’s amaranth one of the best wild grain sources in arid lands [2-3]. Edibility Rating: 5/5 – One of the finest wild amaranths; highly nutritious leaves and prolific seeds.Leaves - cooked as a spinach[46, 85, 95, 105, 161]. The leaves can also be dried for winter use[257]. Seed - cooked[46, 85, 95, 105, 161]. Very small but easy to harvest and very nutritious. It is usually ground into a powder and then used with cereal flours in making porridge, bread etc[257]. 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

Dye

Yellow and green dyes can be obtained from the whole plant[168].

Special Uses

Dynamic accumulator

References   More on Other Uses

Cultivation details

We have very little information on this species and do not know how well it will grow in Britain, though it should succeed as a spring-sown annual. 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:

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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

Native Range

NORTHERN AMERICA: United States (Oklahoma, New Mexico, Texas, Arizona, California (south), Nevada (south)), Mexico (Chihuahua, Coahuila de Zaragoza, Durango, Nuevo León, San Luis Potosí, Sinaloa, Sonora, Tamaulipas, Zacatecas, Baja California (Norte), Baja California Sur, Aguascalientes, Colima, Guerrero, Hidalgo, Jalisco, México, Michoacán de Ocampo, Morelos, Oaxaca, Puebla, Querétaro, Tlaxcala, Veracruz de Ignacio de la Llave)

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.

Considered one of the most noxious weeds of agriculture in the United States. Extremely competitive, capable of overwhelming crops such as cotton, soybeans, and corn. Glyphosate-resistant populations are widespread, making it a major modern weed problem. Despite its weed status, it remains a culturally important and highly edible food plant.

Conservation Status

IUCN Red List of Threatened Plants Status : This taxon has not yet been assessed.

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Amaranthus acanthochitonGreenstripe AmaranthAnnual0.5 7-10 FLMNDM200
Amaranthus albusProstrate PigweedAnnual0.7 4-10  LMHNM401
Amaranthus bidentata Annual0.9 -  LMHNM211
Amaranthus blitoidesMat AmaranthAnnual0.2 4-10  LMHNM301
Amaranthus blitumSlender Amaranth, Purple amaranthAnnual1.0 4-8  LMHNM422
Amaranthus campestris Annual0.0 -  LMHNM211
Amaranthus caudatusLove Lies BleedingAnnual2.0 4-8  LMHNDM412
Amaranthus cruentusPurple Amaranth, Red amaranthAnnual2.0 4-10  LMHNM522
Amaranthus diacanthus Annual0.0 -  LMHNM201
Amaranthus dubiusSpleen AmaranthAnnual1.0 -  LMHNM201
Amaranthus fimbriatusFringed AmaranthAnnual0.6 5-10 FLMNDM500
Amaranthus frumentaceus Annual0.0 -  LMHNM201
Amaranthus graecizansSpreading Pigweed, Mediterranean amaranthAnnual0.5 0-0  LMHNM201
Amaranthus hybridusRough Pigweed, Slim amaranthAnnual2.0 5-12  LMHNM511
Amaranthus hypochondriacusPrince's Feather, Prince-of-wales featherAnnual/Perennial1.2 3-10  LMHNM432
Amaranthus mangostanus Annual1.5 -  LMHNM201
Amaranthus mitchelliiBoggabri WeedAnnual0.5 -  LMHNM201
Amaranthus pallidiflorus Annual1.0 -  LMHNM201
Amaranthus polygamus Annual0.0 -  LMHNM211
Amaranthus polystachyus Annual0.0 -  LMHNM201
Amaranthus powelliiPowell's AmaranthAnnual1.5 5-11 FLMHNM501
Amaranthus quitensisAtacoAnnual1.0 -  LMHNM201
Amaranthus retroflexusPigweed, Redroot amaranth, Wild BeetAnnual0.9 5-11  LMHNM522
Amaranthus spinosusSpiny AmaranthAnnual0.6 4-11  LMHNM231
Amaranthus standleyanusIndehiscent PigweedAnnual0.7 -  LMHNM201
Amaranthus tenuifolius Annual0.0 -  LMHNM201
Amaranthus thunbergiiThunberg's Pigweed, Thunberg's amaranthusAnnual0.5 0-0  LMHNM201
Amaranthus torreyiTorrey's amaranthusAnnual0.8 6-10 FLMHNM401
Amaranthus tricolorChinese Spinach, Joseph's-coat, Fountain Plant, Tampala , Summer PoinsettiaAnnual1.0 3-11 MLMHNM312
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

71

Links / References

For a list of references used on this page please go here

Readers comment

Larri Johnson   Thu Sep 4 17:35:14 2003

I live in west Texas and we are being taken over with this weed. You cannot keep it out of our yards, it chokes everything planted. My question is how or what can I use to kill it. Please respond with any info. We cannot dig them as the soil is very hard and rocky here.

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Subject : Amaranthus palmeri  
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