Sunn Hemp
Sunn Hemp
Sunn Hemp
Sunn Hemp

Sunn Hemp

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Regular price$92.50

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Seeding Rate: 18 - 20 lbs/acre

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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, 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.      

When is the right time to plant? Compare the germination temperature listed below to your soil temperature. Read this article for more info: When Can I Start Planting?

Basic Info
Maturity (Days) Seeds/lb C/N at Maturity Growth Habit Root Type/Depth Cold Kill (F) Dry Matter Potential(Tons/acre)
150 15000 Low Upright Deep Taproot 32 3 - 5
Use and Characteristics
N Fix Potential Lasting Residue Palatability Hay Harvest Regrowth Deep Compaction Surface Compaction Weed Suppression Crimp Kill
100 - 180 Very Good Fair Fair Good Excellent Very Good Fair Easy
Plant Depth Min Germ Temp(F) Drilled Seed Rate (lbs/acre) Broadcast Seed Rate (lb/acre)
3/4 - 1" 65 18 - 20 25 - 30
Heat Drought Shade Wet Soil Low Fertility Low pH Soil High pH Salinity High pH Calcareous
Excellent Very Good Poor Fair Good Good Fair Fair