Topic is iron for turf grass- Use it, or don't use it. Based on Lesco fert I have used the following: 32-0-10 2%fe outstanding product 30-0-10 good product 18-0-18 4%fe would never recommend this to anyone. My question is this-Isn't Iron suppose to give you a better color than no iron? If I used the 30-0-10 product it is 10 times better than the 18-0-18/4% fe. Why is that?