How long does it take for sulphate of iron to kill moss?
2020-1-21 · Then, how does iron sulphate kill moss? Moss Killer Control - Sulphate of Iron 20% Fe is very effective at controlling moss on your lawn. To use, apply 5-10g of solid crystals direct to each 1m 2 of Lawn. Only apply solid product when its raining or about to …Get Price