A topic many lawn care professionals discuss is which method of application is better: spraying the lawn or using a granular fertilizer. Well the short answer is both. Using a spray truck is the most advantageous in the spring when many types of chemicals are applied to the lawn at the same time. 2-4D which kills dandelions is tank mixed with Pendulum which is a pre-emergent used to control crabgrass. These are applied together along with fertilizer around the 1st of April for the best results. A product called Ensure which is a slow release nitrogen is used when spraying lawns in the summer, this product helps prevent the grass from burning. Burning occurs when a plant uptakes nitrogen too quickly and causes a plant to yellow or look burnt. One way to keep this from happening is to use a granular fertilizer that includes a coating on 30-50% of the nitrogen pellets. This coating breaks down over time so that all of the fertilizer is not released at the same time. This helps the grass to stay greener longer.