Nature Safe 21-3-7 Blended with UFLEXX

21-3-7 Blended with UFLEXX is a blend of Nature Safe and UFLEXX stabilized nitrogen. The Nature Safe component of proteins provides slow-release nitrogen to the plant for 7-8 weeks. UFLEXX is a combination of urea, a urease inhibitor and a nitrification inhibitor that provides nitrogen over 6-8 weeks. This formulation is a low-cost alternative for fairway, landscape, and lawn care applications.