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.
Leaves - cooked
. Used as a spinach.
Seed - cooked. 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].
Yellow and green dyes can be obtained from the whole plant
There are no medicinal uses listed for Amaranthus thunbergii.
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
. A drop in temperature overnight aids germination
Cuttings of growing plants root easily
Practical Plants is currently lacking information on propagation instructions of Amaranthus thunbergii. Help us fill in the blanks! Edit this page to add your knowledge.
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. 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
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Amaranthus thunbergii. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Amaranthus thunbergii.
This table shows all the data stored for this plant.
Material uses & Functions
Native Climate Zones
Adapted Climate Zones
Native Geographical Range
Root Zone Tendancy
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