Thanks to the high level of magnesium that supports chlorophyll production, Pro-Kleen Iron Sulphate Spreader Granules keep your grass green and healthy all year round whilst reducing the chance of staining. The magnesium promotes a green colour to give your grass some TLC to transform dull grass. Pro-Kleen’s Iron Sulphate is designed to brighten your grass. It contains a high level of iron that causes grass green up – perfect for keeping your grass vibrant and green. It’s ideal for applying after scarification! The Iron Sulphate Granules are just 1-2mm, meaning more granules per square metre, helping to prevent speckling when applied at lower application rates. The small particle size also allows the granules to lay lower in the soil to keep them out of view, keeping your lawn looking neat and tidy. Keep your grass looking its best with these long-lasting granules. One application will last between 4-6 weeks to keep your grass healthy for longer. This product can be used all year round, providing there is no risk of frost. For best results, we recommend using the product between September and March. The granules are low-dust and super easy to apply with a broadcast spreader. This makes for a hassle-free and quick application. The application rate is 25-35 g/sqm with a coverage of 71.25 – 100 m2. Magnesium (MgO) 5% (3% Mg). Iron (Fe) 12%. Sulphur (SO3) 34% (13.6% S).