Greenway Biotech Ferrous Sulfate Heptahydrate Fertilizer Includes 20% Iron (Fe) 12% Sulfur & 100% Water Soluble Powder- Organic Lawn Fertilizer for Vegetables and Plant Growth (1 Pound)

Works very well. Found the correct recipe with this for spraying on my lawn in the evening then water it in in the morning. I've had blue dew every morning for days! Its making my lawn darker green. Mixes well in a warm solution with some citric acid and some ammonium sulfate. Love it!

It really made my bush come alive. Use rubber gloves to dip it out of container. It turned my nails black. I really had to srcrub them clean!

Easy to apply

Much better than the Moss Out with all the fertilizers and diluted products

It really only deserves 1 or 2 stars. Clogged my 25 Gal. sprayer even after premixing in a bucket. Had to disassemble and reverse spray out all filters on this machine which has a constant water flow mixer built in to the design. The product never fully dissolved and I had to dump the entire mix and then run fresh water in it to clear the recirculating pump. Now I see that one reviewer recommends dissolving in hot water. How could they not put this on the instructions. Wasted most of the bag. Very disappointed!

I received my package and Applied a dose of the product to numerous plants and was happy with the results the packaging is different from what's displayed on the webpage but that was no problem I simply placed entire bag inside of a Ziploc bag to give better protection of the product...

Placed a mixture of this with sulfur fertilizer in holes drilled around the roots of my pin oak tree because my soil is not acidic enough. The leaves on this 30 year old tree were greener than they have ever been and produced a nice red fall color. Tree is definitely healthier.

This is the 2nd bag of greenway ferrous sulfate that I’ve purchased. A little goes a long way. 1oz per gallon of water over 1,000 sqft. I lightly apply water the area prior to evenly spraying this over 1,000 sqft. I apply this in the evening and water it in in the morning (approximately 12-14 hours afterwards). I start seeing results in a couple days to a week and usually last 4-5 weeks.