Yorkshire Green Haylage Grass Seed Mixture. A tried and tested mixture for hay and haylage production. Average heading date 20th May. Yield against control 101% under forage production. Leave until 50% headed for course haylage. 2-3 cuts per year followed by winter grazing. Widely used for equine haylage production ContainsHybrid Ryegrass 25%Italian Tetraploid Ryegrass 25%Italian Diploid Ryegrass 25%Intermediate Tetraploid Ryegrass 25%