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Sod – Simply put, sod is the most expensive option because you are essentially paying someone else for time and materials of growing the grass. Seed – Financially, seeding is an appealing choice as the cost of even the best seed mix is still a lot cheaper than sod, so if budget is your driving factor, seed wins out.
Keeping this in consideration, how much more is sod than seed?
"Generally speaking, seed will cost about $20 per 1,000 square feet, and sod will cost about 35 cents for just 1 square foot," says Stephen Knutson, vice president of Stover Seed Company in Los Angeles. Do the math and that five-pound bag of seed translates into savings of more than $300.
Thereof, can you plant grass seed on top of sod?
General Sod Repair To repair patches of dead grass, remove the dead sod. Wait until the next morning, and then either spread grass seed over the moist soil or add plugs or sod. If you use grass seed, scatter it over the moist soil and rake lightly. Add 1/4 to 1/2 inch of compost to cover the seeds, if necessary.
Sod can be installed at almost any time of the year. The best time to lay sod, however, is in late summer and early fall when temperatures are cooler but grass continues to grow. Spring is the second best time to lay sod and is the preferable time for warm-season grasses such as centipede, zoysia, Bermuda, and St.