Miracle-Gro Evergreen Complete 4-in-1 (14kg Bag) – Evergreen Complete Lawn Feed, Weed & Moss Killer Evergreen Complete provides an all-in-one approach to lawncare. It is designed to give you a healthier looking lawn in just 7 days. With seaweed extracts. This lawn food contains MCPA, mecoprop-P and ferrous sulphate. For use on lawns only and it will kill moss in lawns. Apply Evergreen Complete to lawns between April and September when weeds are actively growing. Apply when the weather is fair, the soil moist and the grass dry.