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Summary
Physical Characteristics
Amaranthus cruentus is a ANNUAL growing to 2 m (6ft 7in).
See above for USDA hardiness. It is hardy to UK zone 4 and is frost tender. It is in flower from July to September, and the seeds ripen from August to September. 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.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very acid soils.
It cannot grow in the shade. It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
A. hybridus cruentus. Thell.
Plant Habitats
Cultivated Beds;
Edible Uses
Edible Parts: Leaves Seed
Edible Uses: Colouring
Leaves - cooked as a spinach[183]. The mild-flavoured leaves are rich in vitamins and minerals[183]. Seed - very small but easy to harvest and very nutritious. They are eaten cooked or ground into a powder and used for making cakes etc[183, 257]. They can also be sprouted and used in salads[183]. 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]. The flowers are used as a food colouring in ceremonial maize bread[183].
References More on Edible Uses
Composition
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Figures in grams (g) or miligrams (mg) per 100g of food.
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Seed (Fresh weight)
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- 0 Calories per 100g
- Water : 0%
- Protein: 15g; Fat: 0g; Carbohydrate: 0g; Fibre: 0g; Ash: 0g;
- Minerals - Calcium: 0mg; Phosphorus: 0mg; Iron: 0mg; Magnesium: 0mg; Sodium: 0mg; Potassium: 0mg; Zinc: 0mg;
- Vitamins - A: 0mg; Thiamine (B1): 0mg; Riboflavin (B2): 0mg; Niacin: 0mg; B6: 0mg; C: 0mg;
- Reference: [ ]
- Notes:
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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.
The plant can be cultivated from the tropics to the temperate zone. It grows best in areas where annual daytime temperatures are within the range 22 - 28°c, but can tolerate 10 - 45°c[418 ]. It can be killed by temperatures of 4°c or lower[418 ]. It prefers a mean annual rainfall in the range 2,000 - 2,400mm, but tolerates 500 - 4,000mm[418 ]. Prefers a well-drained fertile soil in a sunny position[200 ]. Requires a hot sheltered position if it is to do well[K ]. Prefers a pH in the range 5.5 - 7, tolerating 4.3 - 7.5[418 ]. Often cultivated as a food crop and ornamental plant, it has escaped from cultivation in many areas and become naturalised as a weed of cultivated and disturbed ground[305 ]. A fast-growing plant, the first crop of leaves can be harvested in 30 - 50 days from sowing the seed, and the plant can carry on being harvested for up to another 250 days[418 ]. Grain yields usually range from 800-1200 kg/ha but with the use of fertilizers the yield can be raised up to 3 t/ha. This species is cultivated for its edible seed in many parts of S. America and in Japan[58 , 97 , 183 ]. There is at least one named variety, 'Oeschberg' is a very productive plant, growing 1 metre tall and can yield up to 2.5 tonnes per hectare[183 ]. This species is the most adaptable of the grain amaranths, it also flowers under a wider range of daylength hours than the other species[183 ]. Plants are particularly susceptible to attacks by leaf-chewing insects[298 ]. 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 More on Medicinal Uses
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Other Uses
References More on Other Uses
Cultivation details
Prefers a well-drained fertile soil in a sunny position[200]. Requires a hot sheltered position if it is to do well[K]. Tolerates a pH in the range 4 to 7.5. Plants should not be given inorganic fertilizers, see notes above on toxicity. This species is cultivated for its edible seed in many parts of S. America and in Japan[58, 97, 183]. There is at least one named variety, 'Oeschberg' is a very productive plant, growing 1 metre tall and can yield up to 2.5 tonnes per hectare[183]. This species is the most adaptable of the grain amaranths, it also flowers under a wider range of daylength hours than the other species[183]. 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]. In garden design, as well as the above-ground architecture of a plant, root structure considerations help in choosing plants that work together for their optimal soil requirements including nutrients and water. The root pattern is clumping, giving the plant a clumping habit. The predictable growth behaviour makes it easier to maintain without having to apply containment methods[2-1].
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
Native Range
Coming Soon
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.
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 albus | Prostrate Pigweed | Annual | 0.7 |
8-10
| | LMH | N | M | 2 | 0 | 1 |
Amaranthus bidentata | | Annual | 0.9 |
-
| | LMH | N | M | 2 | 1 | 1 |
Amaranthus blitoides | Mat Amaranth | Annual | 0.2 |
6-10
| | LMH | N | M | 2 | 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 diacanthus | | Annual | 0.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
Amaranthus dubius | Spleen Amaranth | Annual | 1.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
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 |
6-12
| | LMH | N | M | 4 | 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 |
7-12
| | LMH | N | M | 2 | 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 | 1.8 |
6-11
| | LMH | N | M | 2 | 0 | 1 |
Amaranthus quitensis | Ataco | Annual | 1.0 |
-
| | LMH | N | M | 2 | 0 | 1 |
Amaranthus retroflexus | Pigweed, Redroot amaranth, Wild Beet | Annual | 0.9 |
3-11
| | LMH | N | M | 3 | 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 torreyi | Torrey's amaranthus | Annual | 0.8 |
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 |
Amaranthus viridis | Calalu, Slender amaranth | Annual | 0.5 |
7-11
| | LMH | N | M | 3 | 2 | 1 |
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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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Author
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Botanical References
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