The combined action of the fertiliser and a weedkiller provides the best of all worlds.The weedkiller kills-off most common lawn weeds and the high nitrogen fertiliser promotes rapid green-up of the lawn and encourages grass growth to cover any bare patches left by dead weeds.Green Up Feed & Weed should be diluted in a watering can and applied via the rose attachment or dribble bar. It can also be applied using a knapsack or other sprayer.For best results do not mow the lawn for three days before and one day after treatment.