The latest fertilization a warm season grass needs is in late summer. But for cool season grasses that remain slightly green throughout the winter, a fall fertilization schedule is important. Both grasses go into a type of winter dormancy during the cold months, but cool season grasses need a fall application of fertilizer. A specialized winterizing fertilizer is best!
Fertilize your lawn after the summer heat but well before the cold weather sets in so the fertilizer has a chance to set in and help protect the grass throughout the winter months.
Winter Considerations
There is no reason to fertilize your lawn in the winter when the grass is not growing. Oftentimes, the ground may freeze, and fertilizer cannot penetrate frozen soil anyway!
Winter is a time of rest and rejuvenation for the grass, so the fertilizer you applied at the end of summer or early fall is doing its work underground, keeping the roots healthy and preparing for spring.
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