Photo by Cheryl Reynolds

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Symptoms

Areas with high traffic or high clay content often become compacted. Where soil is compacted, thin spots or completely bare areas may develop and broadleaf weeds or annual grasses often invade. Compacted soils are difficult to penetrate with a soil probe or screwdriver.

Prevention and management

Aerating the soil can alleviate some compaction. For seriously compacted areas, consider renovation. Amend soil to counteract high clay content. Consider replanting with a turf species that is tolerant to heavy traffic. Avoid mowing lawns when they are wet to prevent compaction.