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Amaranthus spinosus
Amaranthus spinosus
Amaranthus spinosus
Amaranthus spinosus

Amaranthus spinosus

TAXONOMY

FamilyAmaranthaceae
GenusAmaranthus
Zone10

ABOUT

Amaranthus spinosus, commonly known as spiny amaranth or thorny amaranth, is an annual plant in the family Amaranthaceae. It is native to tropical and subtropical regions and is known for its spiny stems and leaves. The plant is often found in disturbed areas such as roadsides and fields.

ALSO KNOWN AS

Galliaria Spitosa
Pigweed
Spiny Amaranth
Thorny Amaranth
Thorny Pigweed
Amaranthus spinosus f. inermis
Amaranthus spinosus var. basiscissus
Amaranthus spinosus var. circumscissus
Amaranthus spinosus var. indehiscens
Amaranthus spinosus var. purpurascens
Amaranthus spinosus var. pygmaeus
Amaranthus spinosus var. rubricaulis
Amaranthus spinosus var. viridicaulis

OVERVIEW

WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature25° C
Humidity60%
GDD900
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Amaranthus spinosus thrives in bright, direct sunlight and prefers warm temperatures. It requires moderate humidity and should be watered when the soil is almost completely dry. The plant can tolerate a range of soil types but prefers well-draining loam.
Harvest
Amaranthus spinosus, commonly known as spiny amaranth, is typically ready for harvest about 60 days after planting. The best time to harvest is when the plant is young and tender, usually before it starts to flower. To harvest, cut the young leaves and stems with a sharp knife or scissors. It is important to wear gloves while handling the plant due to its spiny nature. Regular harvesting can encourage new growth and prolong the harvest period. Ensure to harvest in the early morning or late afternoon to avoid wilting.
Soil
Amaranthus spinosus prefers well-draining loam soil. It can tolerate a range of soil types but performs best in soil that is not too compacted. Ensure the soil dries out almost completely between waterings to prevent root rot.
Fertilizer
Use a balanced fertilizer with an N-P-K ratio of 10-10-10. Fertilize the plant every 4-6 weeks during the growing season to promote healthy growth.
Repotting
Repot Amaranthus spinosus annually or when it outgrows its container. Choose a pot that is slightly larger than the current one and ensure it has good drainage. Gently remove the plant from its old pot, shake off excess soil, and place it in the new pot with fresh soil.
Propagation
Amaranthus spinosus can be propagated by seeds. Sow the seeds in well-draining soil in a warm, sunny location. Keep the soil moist until the seeds germinate, which usually takes 1-2 weeks.
Pruning
Prune Amaranthus spinosus regularly to maintain its shape and encourage bushier growth. Remove any dead or damaged leaves and stems. Pruning can also help prevent the plant from becoming too leggy.
Toxicity
Amaranthus spinosus is not known to be toxic to pets or humans. However, it is always best to keep plants out of reach of pets and children to prevent any accidental ingestion.
Additional
Amaranthus spinosus can become invasive in some areas, so it is important to monitor its growth and prevent it from spreading uncontrollably. Regular pruning and proper care can help manage its growth.
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How To Grow Amaranthus spinosus | EarthOne