The guaranteed anaylsis of a fertilizer, commonly refered to as N-P-K, and is represented by three numbers:

• The first number, Nitrogen (N), promotes overall grass shoot growth.
• The second number, available Phosphate (P), promotes strong root growth.
• The third number, soluble Postash (K), helps grass withstand stress, drought or disease.

For example, a 24-2-8 fertilizer has 24% nitrogen, 2% available phosphate and 8% soluble potash.