Hay Gro 22-1-2 – Liquid Fertilizer for Hay & Pastures Hay Gro 22-1-2 is a comprehensive liquid fertilizer specially formulated for hay fields and pastures. Enriched with Medina Soil Activator, Molasses, Humic Acid, and Seaweed, it nourishes your forage, strengthens roots, and enhances soil health for greener, more productive pastures.