Lawn Food: 28-0-0 High Nitrogen Fertilizer (2.5 Gallon)28 0 0 High Nitrogen Lawn Food contains 70% quick release nitrogen fertilizer to jump start greening and growth and 30% slow release liquid nitrogen so growth doesn't drop between applications. This Lawn Food is best to enhance green and growth or to correct Nitrogen nutrient deficiency. This lawn fertilizer is great for warm season grasses as a spring or summer fertilizer, and for cool season grasses as a spring or fall fertilizer when grass growth