Sulphate of iron 20kgSulphate of iron 20kg is a lawn tonic which gives the lawn a healthy dark green colour and strengthens the grass. It can be used for moss control in grass. It is ideal to prevent moss appearing on your lawn or treat areas which have already been invaded by moss. Can be applied using a watering can or knapsack sprayer. Gives grass a healthy dark green colour quickly Use anytime of year Encourages finer turf grass species. Application Rate: 40g m