Vicia villosa. Hardy Annual. This nitrogen fixer is a lanky and sprawling, but versatile legume that is fairly tolerant of acid soils and light shade. Apply seed inoculant to seeds before planting. It can be mowed down in spring to supply good mulch. Hardy to Zone 4: -34°C (-30°F). 500g covers approximately 145 m2 (1,560 ft²). Sow Hairy Vetch cover crop seeds from early March to mid-April, and again August to mid-September.
NOTE: Hairy Vetch seeds are toxic to chickens, so plant out of the way of foraging flocks or cut the vetch while it is just flowering.