If your yard is a disaster zone—think moon crater meets rollercoaster—then you want topdressing. Spread a thin layer (half an inch!) of sand-soil mix over the entire lawn. Then, use a broom or a stiff rake to work it into the grass. Do not suffocate the grass by dumping a mountain of dirt. The grass needs to breathe, or it will turn into a giant brown fart of death.
Fun fact: The world’s largest topdressing job was done on the golf course at St. Andrews in Scotland. They used 1,200 tons of sand. You do not need 1,200 tons. You need, like, two wheelbarrows. Unless your yard is the size of a small country.
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The "I’m Too Lazy" Solution
If all this sounds like work, there’s one weird trick: aeration. Even if you never add soil, aerating your lawn (pulling out little plugs of dirt) can help the ground settle over time. It’s not leveling, but it’s like taking ibuprofen for a broken leg—it helps a bit. Combine aeration with overseeding, and the new grass will fill in the low spots naturally.
But let’s be real: that’s like hoping your dented car will fix itself by polishing the paint. It won’t.