The answer to 'best time for lawn fertilization' is that the best time to fertilize your lawn is in the fall, typically between September and November. This is the ideal time because the grass is actively growing and can absorb the nutrients from the fertilizer, helping to strengthen the roots and prepare the lawn for the winter months ahead.
Fertilizing in the fall encourages deep root growth, which helps the grass survive the winter and come back lush and green in the spring. It also helps the grass crowd out weeds, reducing their growth and improving the overall appearance of your lawn.