Services
Aeration & Overseeding
If your lawn holds water, feels spongy with moss, or just looks thin, this is usually the fix — timed to early fall, when Portland's cool-season grass recovers fastest.
What's included
Much of the Portland metro sits on clay-heavy soil that compacts over a few years of normal foot traffic, mowing, and rain. Compacted soil can't breathe or drain, which is exactly the condition moss and shallow-rooted weeds prefer — and it's the reason a lawn can look thin no matter how much you fertilize it. Core aeration pulls small plugs of soil out of the lawn, relieving that compaction so water, air, and nutrients can actually reach the roots.
We follow aeration with overseeding — spreading a fresh blend of perennial ryegrass and fine or turf-type fescue into the holes and any thin or bare patches. The timing matters as much as the service itself: early-to-mid fall is the window here, when soil is still warm enough for germination but cooler air and returning rain mean the new seed doesn't have to fight summer heat and drought to establish. Spring aeration works too, but fall gives the strongest result for cool-season grass.
Most residential lawns benefit from aeration and overseeding once a year; heavily compacted or high-traffic yards sometimes call for it twice.
Good questions
Aeration & Overseeding, answered.
Why fall instead of spring?
Fall pairs cooling temperatures and returning rain with soil that's still warm enough for seed to germinate quickly — new grass gets to establish without fighting summer heat, which gives the strongest result for our cool-season lawns.
Will aeration make my lawn look worse at first?
Yes, briefly — you'll see small soil plugs across the lawn for a week or two while they break down. That's expected and it's the sign the treatment reached the soil, not just the surface.
Ready for aeration & overseeding?
Get a free on-site quote — we'll tell you honestly what your yard needs.
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