Dethatching and Aerating Bermuda Grass: Timing for Recovery

Best Time: Early Summer

Perform dethatching and core aeration when Bermuda is actively growing—after full green-up, several mowings, and before extreme heat/drought. Typically late May to June in transition zones; June–July in Deep South.

Why Timing Matters

• Active growth = rapid recovery from mechanical stress.
• Soil moisture adequate but not saturated.
• Avoid spring (slow growth) and late summer (heat stress).

Do You Even Need It?

On an organic program with deep watering, high mowing, and sugar applications, thatch rarely exceeds ½ inch. Earthworms and microbes digest it naturally. Aeration becomes unnecessary as biology creates pore space.

If You Must

• Dethatch first (vertical mower), remove debris.
• Core aerate (hollow tines), leave plugs to dissolve.
• Topdress with ¼ inch compost.
• Water deeply, apply sugar (4 lbs/1,000 sq ft).