
Fertilize only as needed to maintain the health of lawns and landscape plants. If plants show signs of stress, such as yellow leaves or stunted growth, identify the problem before applying fertilizer. Do not exceed the rate of 1 pound of nitrogen per 1,000 square feet per application.
Credit: 2 inches.
Use slow-release fertilizers. Buy fertilizers that contain 30% or more of the nitrogen in slow-release forms.
Credit: 2 inches.
Use iron (ferrous sulfate or chelated iron) instead of nitrogen to make your lawn green during the summer.
Credit: 1 inch.
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