Are you sure your grass needs an Iron supplement? Does a soil test indicate that or does the grass just look a bit anemic? There are numerous nutrient deficiencies that can mimic what might appear to be an Iron deficiency and soil pH is one.

Before spending money, time, and energy on something that may not be needed have a soil test done.

Thank you for responding. I was just curious about whether or not it would work like ironite it chelated iron.

Ironite makes a liquid product called- 'Ironite plus' .......its available at most garden centers, or on-line.

Ironite is okay but I’m curious about the topic of the post specifically. Iron supplements from any pharmacy section could me a more cost effective way to add iron to the grass.

Most iron supplements are pharmaceutical-grade iron sulfate, the same as you can get by purchasing fertilizer grade iron sulfate (cheaper). As long as you grind them finely enough and dissolve them in the water, they'll work. I'd recommend adding a good non-ionic surfactant to help it stick.

They'll be pricey as heck compared to fert-grade stuff (usually with large amounts of iron oxide contaminates), but they'll work.

Welcome back morpheus!!!! I was just thinking the same thing, ironite has to be cheaper than pharma right?

Check out mbferts. They have chelated iron that's 13% iron and it's much cheaper and in powder form. I'll be buying that now instead these liquid iron supplements that only 3-6% iron.

Pure ferrous sulfate (up to 30% iron in monohydrate form, about 15% in heptahydrate) is fine. Chelation is great for soil applications, but for spray, the leaf surface is already acidic and the spray is acidic, so chelation is not necessary.

Ferrous sulfate heptahydrate and ferrous sulfate monohydrate will both be far cheaper than any chelated form.

Thank you everyone for the help. I’m going to a bit more research.

Iron as a micronutrient has beneficial property's to all plants but its mostly notible one is it turning grass green for a short period of time maybe a week or two I think it's kind of a wast of money.