The Q&A Archives: Phosphorous Free Fertilizer; Bulbs

Question: Why are some fertilizers made phosphorous free? It stimulates root growth, correct? FYI - I am in the Atlanta, GA area.

Answer: Actually, phosphorous promotes flowering (along with helping strengthen stems). Potassium is the element that promotes healthy root growth (along with working in conjunction with the other two elements). So, a fertilizer without phosphorous would be great for non-flowering plants.

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