The Q&A Archives: Lawn Fertilization

Question: When would be the best time to fertilize my lawn here in Southern California? Its Marathon sod and has been in for about 3 years.

Answer: Lawns are heavy feeders and require regular applications of high-nitrogen fertilizers. Feed your lawn in the warm months of spring and summer, when growth is most pronounced. Feed your lawn now to help it get a head start in the battle againsts pests and weeds. A thick, lush, healthy lawn will crowd out weeds and will be less susceptible to diseases. Use a fertilizer with a ratio of about 5 or 6-1-2 of Nitrogen, Phosphorous and Potassium. A typical formula that's relatively easy to find is a 24-4-8. The exact numbers are not critical, just bear in mind that Nitrogen promotes leaf growth, Phosphorous helps stems and roots, Potassium fortifies the root mass, and works in combination with the other major elements.

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