For homeowners who are new to using sod in their lawns, one of the most frequently asked questions we receive is about yellowing. Namely, those irritating yellow spots in new sod that seem to plague your beautiful lawn. While this can be irritating to many, yellow sod may occur for a number of reasons. The good news is that this problem often can be corrected, without replacing your sod - proved you understand the root cause.
There is such a thing as "too much of a good thing." Step away from the watering can and turn off that sprinkler. That telltale yellowing may indicate that your newly sodded lawn is actually getting too much water. Usually, sod requires five to 10 minutes of watering two to three times daily for the first seven to 10 days of its planting - enough water to soak the first few inches of the soil. In week two, you can reduce the watering to once daily and only soak the first 1/4 inch of soil. Finally, after three weeks, you can reduce the watering to every other day and then finally cut back to every once or twice per week thereafter.
Yep, it turns out that all along, Fido may have been the culprit. Pet urine is very harsh and burns sod and grass with its excessive nitrogen content. Most pets and animals will repeatedly mark in the same place, so focus on watering these spots more frequently to dilute the urine.
Poor Soil Quality
Excessive shade, competing with tree roots and other plants for nutrients, and a number of other factors can make it hard for your sod to get proper nutrition. If you have this problem, considering putting mulch, a rock garden, or some shade-loving flowers in these areas instead to avoid them being bare.
For the first 30 to 60 days of installation, do not fertilize your sod. The new roots cannot yet absorb the nutrients and may turn yellow as a result. Your sod will already arrive fertilized so don't worry about it starving. Once the appropriate time has passed, then you can start to fertilize it.