University of Illinois Extension

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What Are Nitrogen, Phosphorous and Potassium?

How do these nutrients help plants? Well, let's take a look.

Nitrogen is used by plants for lots of leaf growth and good green color.

Phosphorous is used by plants to help form new roots, make seeds, fruit and flowers. It's also used by plants to help fight disease.

Potassium helps plants make strong stems and keep growing fast. It's also used to help fight disease.

Fertilizer is one of the many garden "tools" that is used in making good gardens great gardens.

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