Sunn Hemp - Crotolaria juncea is a fast growing nitrogen fixing legume. Sunn Hemp is used for green manure forage, organic soil building and cover crop applications. Sunn Hemp is non seed bearing in the North American climates. Sunn Hemp provides as much as 2 1/2 tons per acre of green tonnage with a maximum of 100 units of Nitrogen fixation per acre in as little as 60 days. It is also known to suppress nematodes. Sunn Hemp is much easier to get incorporated into the soil when needed than sorghum, cow peas, and many other cover crop varieties. Sunn Hemp is the next generation cover crop for the vegetable farmers. Seed Rate: 25-35 lbs. per acre if drilled, 30-50 lbs. per acre if broadcast. Note: The higher seeding rates should be used if the crop will be terminated in less than 60 days or if severe weed competition is expected. Planting: After the last chance of frost in the spring.