Lawn Aeration Guide
Aeration should be done during a strong growing period for recovery and fill-in. It relieves soil compaction and allows water and oxygen deep into soil. Prep: cut lawn fairly short first — hard to pick up plugs otherwise. Use a core-pulling aerator (not spike). Pick up plugs after aeration. Late summer through early fall is the primary aeration window for cool season grasses.
Frequently Asked Questions
When is the best time to aerate a cool-season lawn?
Late summer through early fall is the primary window for cool-season grasses. The grass is entering its strongest growth period and can recover quickly from the disruption.
Should I use a spike or core aerator?
Always use a core-pulling aerator, never a spike aerator. Spike aerators actually increase compaction around the holes. Core aerators pull plugs of soil out, creating space for roots, water, and air.
Should I pick up the plugs after aerating?
Yes, pick up the plugs after aeration. Cut the lawn fairly short first to make plug pickup easier. Some people leave plugs to break down, but picking them up gives a cleaner result.
How often should I aerate my lawn?
Most lawns benefit from annual aeration. Heavily compacted soils or clay soils may need aeration twice a year. Sandy soils may only need it every other year.
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