Sunn Hemp

WSLG040
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Legumes

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Sunn Hemp’s vigorous growth rate and nitrogen fixing capabilities make it an attractive cover crop to build residue, sequester nitrogen,…

Sunn Hemp’s vigorous growth rate and nitrogen fixing capabilities make it an attractive cover crop to build residue, sequester nitrogen, suppress weeds and improve soil health. When planted by itself it regularly produces 2.5tons of biomass and 120 lbs N/acre. Sunn hemp is a tropical plant and requires a warm soil temperatures germination and when fall planted it needs at least 45 days to accumulate growth before the first frost.      

Basic Info

Maturity (Days)
150
Seeds/lb
15000
C/N at Maturity
Low
Growth Habit
Upright
Root Type/Depth
Deep Taproot
Cold Kill (F)
32
Dry Matter Potential(Tons/acre)
3 - 5

Use and Characteristics

N Fix Potential
100 - 180
Lasting Residue
Very Good
Palatibility
Fair
Hay Harvest
Fair
Regrowth
Good
Deep Compaction
Excellent
Surface Compaction
Very Good
Weed Suppression
Fair
Crimp Kill
Easy

Planting

Plant Depth
3/4 - 1"
Min Germ Temp(F)
65
Drilled Seed Rate (lbs/acre)
18 - 20
Broadcast Seed Rate (lb/acre_)
25 - 30

Tolerance

Heat
Excellent
Drought
Very Good
Shade
Poor
Wet Soil
Fair
Low Fertility
Good
Low pH Soil
Good
High pH Salinty
Fair
High pH Calcareous
Fair