Hancock's Sunn Hemp Seed - Coated is not available this season. Check out Sunn Hemp Seed - Raw here. Call our office with any questions (800-552-1027). Sunn Hemp 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 2.5 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.**This seed is pre-inoculated**