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When to Scalp and Dethatch a Lawn: Timing Matters

Scalping (mowing very low) should wait until grass is 25% green—early March is too early. Dethatching (vertical mowing) is different: do it in late May when grass grows vigorously. For thatch control, core aerate or topdress with soil instead—less damaging. Scalping helps warm soil; dethatching removes organic buildup.

Don't confuse the two; each has its season.

About Gardening: Reviving Zoysia Lawn with Core Aeration; Maryland Lawn Thatch Removal and Tall Fescue Renovation; Why Dethatching Your Lawn Matters: Benefits, Methods, and Timing; Solving Thatch Buildup with Core Aeration and Smart Fertilizing; Thatch Management: Dethatch or Aerate?; Reviving a Crabgrass- and Grub-Infested Clay Lawn in Kingston, NY; Core Aeration vs. Scarifying for a Compacted London Clay Lawn; Lawn Scarification: Essential Thatch Control for Healthy Turf; Scalping Bermuda in Spring: Proper Timing and Height for Faster Green-Up; Removing Thatch from Bermudagrass Lawns: Professional Dethatching Guide

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