If your lawn is thin, patchy or hard as a driveway, aeration and overseeding is one of the most effective things you can do. Timing is what makes it work.
Why early fall works best
Cool-season grasses, the kind most Minnesota lawns are made of, grow best when the soil is still warm and the air is cooling off. From late August through September, seed sprouts quickly, weeds are slowing down and the new grass has time to establish before winter.
What aeration does
Foot traffic, heavy clay and years of mowing compact the soil. Compacted soil keeps roots shallow and makes it hard for water and air to get in. Core aeration pulls small plugs from the lawn so roots can go deeper. Seed spread right after falls into those openings and makes good contact with the soil.
Signs your lawn needs it
- Water puddles or runs off instead of soaking in
- Thin or patchy turf that never fills in
- Soil that is hard to push a screwdriver into
- A lot of foot traffic, kids or pets on the same paths
Can I do it in spring?
Yes, once the soil is no longer soggy. Keep in mind that weed preventers applied in spring can stop grass seed from sprouting, so plan the two together.
What to do afterward
Keep the seeded areas lightly moist until the new grass comes in. Hold off on heavy traffic, and keep your mower blade sharp when you start mowing again. Leave the pulled plugs on the lawn; they break down on their own.
We handle aeration and overseeding across the east side of Saint Paul and nearby communities.