I use to use it but I had trouble with burning. It's very acidic so you need a lot of pH up. I now use cooked bone meal at 6-12-0 and am having a lot better results, with no burning, I use 1 teaspoon of molasses per gallon for potassium.A 4 dollar thing of bone meal can be used for 50 plus gallons of soil! I use 2-3 large tablespoons per gallon