Sunn Hemp Seeds
LATIN NAME
Crotalaria juncea L.
SEASON
Annual
HEIGHT
36 - 108 inches
WHEN TO PLANT
Spring to early summer
MOISTURE REQUIREMENTS
Moderate
CROP HEIGHT
36 - 108 inches
COLD TOLERANCE
Poor
HEAT TOLERANCE
Excellent
SHADE TOLERANCE
Poor
DAYS TO MATURITY
60 - 90 days
PLANT CHARACTERISTICS
High biomass, nitrogen fixator
About...
Sunn hemp (Crotalaria juncea L.) - is a legume commonly used as a cover crop for southern and sub-tropical and tropical farming systems. It has recently been more adopted in the Midwestern United States cropping systems.Trustpilot Reviews
Great product and value. Seeds popped up within a few days and germination rate…
Great product and value. Seeds popped up within a few days and germination rate seems to be very high.
Read more on TrustpilotMORE COVER CROP OPTIONS
Planting Directions
SOWING TEMPERATURE
65F+
SEEDING RATE
25 - 50 lbs per acre
AVERAGE GERMINATION TIME
3 - 7 days
PLANTING DEPTH
1/4 - 1 inch
SOWING METHOD
Broadcast or drill
ENVIRONMENT
Full sun
USDA ZONES
8 - 11
ESTABLISHMENT RATE
Fast
Sunn hemp (Crotalaria juncea L.) - is a legume commonly used as a cover crop for southern and sub-tropical and tropical farming systems. It has recently been more adopted in the Midwestern United States cropping systems. Sunn hemp has high rates of biomass production — over 20 percent greater than crimson clover and hairy vetch in research trials. In as little as 60 to 90 days it can produce 120 pounds of nitrogen per acre and can suppress weeds up to 90 percent.
Sunn Hemp is adapted to a wide variety of soil and environmental conditions, thriving through hot, dry summers and continuing to grow until the first frost. But sunn hemp isn’t just a soil builder — it also offers benefits as a forage producer. Sunn hemp is easy to grow and amazingly productive.
Because plants can reach 3 to 9 feet in height, wide spacing between rows (6 inches is recommended) may make plants susceptible to lodging. With adequate moisture, temperature and fertility, researchers have recorded a growth rate of 1 foot per week. Plants can return to or exceed this growth rate if slowed by temporary drought.
Common Questions
Does Sunn Hemp Improve The Soil?
Sunn hemp is a powerhouse for soil improvement, thriving in various conditions and fixing nitrogen to boost soil health. Ideal cover crop mix, and ground cover, sunn hemp adapts well to hot summers and various soil types, improving soil fertility.
Does It Produce Biomass?
Boost your biomass production with sunn hemp! This legume not only enriches your soil with nitrogen but also creates dense biomass, ideal for cover crop seeds and hemp seeds for growing. Its rapid growth make it perfect for erosion control.
Does It Fixate Nitrogen?
Revitalize your soil with sunn hemp, a nitrogen-fixing legume that enhances soil fertility. Perfect for cover crop seed mix, sunn hemp thrives in hot, dry conditions and improves soil health. With its deep root systems and nitrogen fixation.
Does It Produce Seeds?
Experience the power of sunn hemp's deep-yellow flowers, producing over 15,000 tiny seeds per pound! Ideal for cover crop seeds and ground cover seeds, sunn hemp enriches soil and thrives in various conditions.
What Is The Seeding Rate & Planting Time?
Sow 25 - 50 pounds per acre. Plant when soil temperatures reach above 50F and at least four to five weeks before frost in the fall.
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