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Sod Fertilization

A properly fertilized lawn has good density and deep color. Fertilizing not only strengthens the plant, it also protects your lawn from drought, disease, and weeds. Fertilizer is composed of varying ratios of nitrogen, phosphorous, and potassium. This is known as the N-P-K analysis. Our Arizona soil has very healthy levels of potassium and although you can include it in your fertilizing regimen it is not required for a vigorous growth strategy.

Because of the increased daylight hours during the summer growing season an application of something similar to 21-0-0 analysis (21% nitrogen, 0% phosphorus, 0% potassium) once a month works great. Nitrogen is primary ingredient for the long summer months because the blades of turf absorb a substantial amount of sunlight that helps your lawn maintain its deep green color. Other fertilizer ingredients can also be used to assure good results that might improve existing soil conditions.

Newly installed over-seed sod with perennial rye grass should be fertilized immediately after installation, preferably with something similar to a 16-20-0 analysis (16% nitrogen, 20% phosphorus, and 0% potassium). The high nitrogen content allows for an increased growth regimen while the phosphorus gives encourages good root development. Most fertilizer blends work well with all of the NPK ingredients. The most important ingredients are higher levels of N.P.

For the winter months it is best to continue a 16-20-0 analysis (16% nitrogen, 20% phosphorus, 0% potassium) or something similar that has plenty of nitrogen and phosphorus. The shorter daylight hours mean the turf needs a nutrient source, namely phosphorus, to replenish its chlorophyll reserves. We recommend an application every 4 to 6 weeks for a healthy winter lawn.

These are the most commonly used fertilizer blends for your lawn; however, fertilizers with a similar ratio and additional ingredients will also strengthen your turf and deepen its color. For questions or concerns about your lawn call our lawn professionals.

Fertilizing Tips:

  1. If you see urine spots in your ayrd from dogs, you are low on fertilizer.
  2. A properly fertilized yard helps the mower blades make a cleaner, more precise cut.