Garden Basics Lawn Fertiliser is a fast acting lawn food that will produce healthy, lush lawns within one week of application. It can be applied to lawns by hand or fertiliser spreader. Garden Basics Lawn Fertiliser is highly soluble and fast acting so it must be watered in immediately AFTER APPLICATION. The granular formulation filters down to the lawns roots and quickly dissolves when watered into the soil to give the plants a slow even distribution of nutrients. It is not recommended for new lawns.