Viano Lawn Boost with added magnesium and iron which gives good strong green colour. It stimulates healthy growth and helps to protect the grass against disease and drought. Lawn Boost is the ideal treatment to give your lawn a quick start after the winter weather and keep it healthy throughout the growing season. Viano Lawn Boost will produce a strong grass plant with a good rooting structure, which can out compete weeds, moss and diseases. Leaving you with a rich green lawn which will withstand hard play.