What do the 3 numbers stand for in a fertilizer mix fore example 20-20-20?
A. These numbers represent the percentage of nitrogen (N), Phosphorus (P) and Potassium (K). These are the 3 main elements in plant fertilizer. Back To Top • Q. How does N-P-K affect plant growth? A. Nitrogen (N) is required in high amounts during the vegetative stage of growth and not so much during the bloom stage. Nitrogen flushes away easily and is always in need of replenishing during the vegetative period. It is also very important for leaf and stem growth. Nitrogen is very active amongst young leave, bud shoots and shoots. Plants show signs of nitrogen deficiency with symptoms like slower growth, yellowing occurs amongst young leaves between the veins eventually progressing to yellow the whole leaf, eventually leading it to completely die and fall off. Phosphorus (P) is used in high amounts in germination, cuttings, seedlings, and bloom stage. Phosphorus is very important for vigor and seed production. It is very active in new growth and root tips growth, small dark blotchy leav
