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Overseeding after aeration is not always necessary, but it can be highly beneficial, especially for lawns with thin or patchy areas. Aeration creates an optimal environment for new grass seed germination by improving soil contact and reducing competition from thatch. If you aim to thicken your lawn, address bare spots, or introduce a new grass variety, overseeding immediately after aeration can help rejuvenate and enhance your lawn's overall health and appearance. However, whether you overseed or not depends on your specific lawn goals and condition.

You can try that, but it isn't likely to yield results. It's like watering potted plants without putting the seeds in. Most of the tossed grass seeds sit on top of the soil or existing grass blades and never germinate. The seeds need to make it into the soil, just like growing a potted plant. The best way to accomplish this is to aerate your lawn first, then overseed.

Aeration improves soil health, enhances water and nutrient absorption, and promotes stronger grass roots.

Choosing fertilizers: slow-release for steady nutrients, organic for eco-friendliness, or specific blends for soil deficiencies or grass types.