Home > Backyard > Lawn > Lawn Care > How To Apply Fertilizer To Lawn: Everything You Should Know To Keep Your Lawn Green & Healthy To fertilize a lawn properly, you must determine the type of your grass. Once you do that, you can establish the best time for fertilization. Mow the grass 3–4 days before you fertilize lawn. Then water the grass one night prior to applying the fertilizer with the spreader or garden sprayer. Are you new to lawn maintenance and hoping that the first time’s a charm? Unfortunately, there is no magic that can help your…