Scotts Lawns 5M Lwn Fertilizer/Iron 23309 Dry Lawn Fertilizer by Scotts. $20.35. Scotts Lawns #23309 5M Lawn Fertilizer/Iron. SCOTTS LAWNS. America's favorite lawn fertilizer for a strong lawn, Water Smart: Improves lawn's ability to absorb water and nutrients, Apply any season to any grass type, Feeds & strengthens lawn against heat, drought & wear & tear, Kid & pet friendly.