Organic, All-Natural & Non-GMO Sourced Sweet Corn Fertilizer (6-3-3)! The Urban Farmer Sweet Corn Fertilizer will increase corn yields, size, health and taste. This 6-3-3 (NPK) fertilizer ratio is specially formulated to get the most out of your corn. This fertilizer gives the corn exactly what it needs at the right time. Sweet Corn fertilizer also contains several other beneficial