Crotalaria juncea
TAXONOMY
FamilyFabaceae
GenusCrotalaria
Zone10
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Plants of the World OnlineABOUT
Crotalaria juncea, commonly known as sunn hemp, is a fast-growing annual legume native to India. It is widely used as a green manure and cover crop due to its ability to fix nitrogen in the soil. The plant thrives in subtropical climates and is known for its bright yellow flowers and robust growth. It does not have a dormancy period and is typically grown for its soil-improving properties.
ALSO KNOWN AS
Isotropis Argentea
Sun Hemp
Crotalaria benghalensis
Crotalaria cannabinus
Crotalaria fenestrata
Crotalaria ferestrata
Crotalaria porrecta
Crotalaria sericea
Crotalaria tenuifolia
Crotalaria viminea
OVERVIEW
VPDCalculate
WaterDry
SoilLoamy
LightDirect Bright (8 Hours)
Temperature25° C
Humidity60%
GDD1,800
pH6.5
Pressure1,013 mbar
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DETAILS
Care Instructions
Sunn hemp requires full sun and moderate temperatures to thrive. It prefers well-drained soil and should be watered when the soil is almost dry. The plant can tolerate a range of humidity levels but performs best in moderately humid conditions. Regular monitoring and care will ensure healthy growth.Harvest
Crotalaria juncea, commonly known as sunn hemp, is typically ready for harvest around 120 days after planting. Harvesting should be done when the plant is in full bloom but before the seeds have fully matured to ensure the highest quality of fiber. The plants are usually cut at the base using a sickle or a mechanical harvester. After cutting, the plants are left in the field to dry for a few days before being bundled and processed. It is important to harvest during dry weather to prevent mold and ensure the fibers remain strong and usable.Soil
Crotalaria juncea prefers well-drained loamy soil with a slightly acidic to neutral pH. The soil should be kept moderately dry between waterings to prevent root rot. Good drainage is essential for the plant's health.Fertilizer
A balanced fertilizer with a nutrient composition of 5-10-10 is recommended for sunn hemp. Fertilize the plant at the beginning of the growing season and once more during its growth period to ensure optimal nutrient availability.Repotting
Repotting is generally not necessary for sunn hemp as it is an annual plant. However, if grown in containers, ensure the pot is large enough to accommodate its root system and repot if the plant outgrows its container.Propagation
Sunn hemp is easily propagated from seeds. Sow the seeds directly in the soil after the last frost when the soil temperature is warm. Ensure the seeds are planted at a depth of about 1-2 cm and keep the soil moist until germination.Pruning
Pruning is not required for sunn hemp. However, if grown as a cover crop, it can be mowed or cut back before it sets seed to prevent self-seeding and to incorporate the biomass into the soil.Toxicity
Crotalaria juncea is generally non-toxic to pets and humans. However, as with any plant, it is advisable to prevent pets and children from ingesting any part of the plant.Additional
Sunn hemp is an excellent choice for improving soil health due to its nitrogen-fixing capabilities. It can also be used as a forage crop for livestock, although it should be fed in moderation due to the presence of certain alkaloids. The plant is also known to suppress weeds and improve soil structure.REVOLUTIONIZE YOUR PLANT CARE
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