In the spring, as soon as the ground dries enough for tilling or plowing, turn the cover crop under. To allow time for the organic matter to decompose, turn the cover crop under at least 3 weeks before you intend to plant. If the cover crop is too tall to turn under easily, mow it first. Do not allow cover crops to go to seed. Organic matter additions to the soil are a continuing necessity.
Deep roots break up hard soil, trace elements to surface.
Lime if pH is low. In mountains sow by Aug. 10. Prefers medium-rich loam soil. Lime if pH is low. Not as hardy as rye.