This perennial crop cover is bests for fertile grounds or home garden area's. It works in all zones. Fixes 200lbs of nitrogen per acre and efficiently sequesters subsurface minerals by the way of it's deeply delving roots systems. Inoculate with rhizobium inoculate and sow preferably early fall or spring. Rake and keep moist. Use 1lb per 1000sq ft
Alfalfa, a nitrogen fixer, is a suitable cover crop for large gardens or orchards. It requires a full season to mature. Alfalfa roots deeply, so use it to break up hard soils. You can plant alfalfa in the spring in cold climates, or in the fall in mild climates.