Ferrous sulphate heptahydrate is cheaper in bulk, yes, it makes it go black then you rake it out. Moss has no circulatory system so it only damages the moss it touches. You need two dry days in a row, soak the moss then spray and wait, rake then do it again.
Ferrous sulphate heptahydrate is cheaper in bulk, yes, it makes it go black then you rake it out.
Moss has no circulatory system so it only damages the moss it touches.
You need two dry days in a row, soak the moss then spray and wait, rake then do it again.
Thanks! I will give it a shot. I should had raked it while it turned black. This will definitely take some time.