No Phosphorous in fertilizer? - Knowledgebase Question

Conyers, Ge
Question by jimbo45941
May 18, 2010
Since phosphorous feeds roots, why do so many lawn fertilizers have zero as thier middle number???

Answer from NGA
May 18, 2010


Actually, phosphorus promotes flowering, which isn't something you need in a lawn. To break it down further, nitrogen promotes lush, green growth, phosphorous encourages strong stems and flower production, potassium promotes root growth and works in conjunction with nitrogen and phosphorus for overall plant health. So, if you choose a lawn fertilizer with an NPK ratio of 3-1-2, you'll have a lush, thick lawn with a healthy root system.

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