With warming temperatures comes a really good question about lawn fertilization: Which type of fertilizer is best for my lawn, quick-release or slow-release? Quick-release fertilizers encourage rapid growth and greening but are probably not the best option for warm season turf grasses. Slow-release granular fertilizers in a 3-1-2 ratio of nitrogen, phosphorous, and potassium promote root development and release nutrients to your lawn over an extended period of time. Competing with your neighbor to see who can green up their lawn first? Remember slow and steady always wins the race in the end!