PHâN NPK 20-20-15 THINGS TO KNOW BEFORE YOU BUY

For those who have an absence of potassium in the soil, a fertilizer high in potassium (the third quantity listed with a fertilizer offer) can nutritional supplement this important nutrient.  Compost or manure may also include some potassium in your soil.Even so, the packaging may well not actively reference NPK but will usually carry the 3 figure