Sunn Hemp

Sunn hemp is a summer-seeded warm-season annual legume that can produce up to 100 lbs. of N/acre.

Seeding Rate (lbs. / acre)

  • Drill: 12-15
  • Broadcast: 15-20
  • In a mix: 3-8

– Planting depth: Up to 1” max
– Approximate seeds/lb: 15,000
– Days to germination: 3-7

Sunn Hemp Benefits & Info

  • Main usage – nitrogen-fixing cover crop
  • Works extremely well after wheat
  • High seeding rates produce large amounts of biomass
  • Shown to increase organic matter levels
  • Good choice to increase soil fungi populations
  • Mixes well with other summer annuals for soil building
  • Research has shown suppression to (root-knot & burrowing) nematodes
  • Rapid growth; can reach 6 feet tall in 60 days
  • Will terminate at first frost

Forage Considerations 

  • Can also be grazed, ensiled, or hayed


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