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Doc explains why many should consider dethatching their lawn to improve the lawn's health and growth. This should only be done during the lawns active growing season.
Dethatching a lawn helps by removing the thick layer of thatch — a mix of dead grass, roots, and organic debris — that accumulates between the soil surface and the green grass blades. Here’s how dethatching benefits your lawn:
1. Improves Air, Water, and Nutrient Flow
Thick thatch blocks water and nutrients from reaching the soil and roots.
Removing it allows rain or irrigation to soak in more effectively and nutrients to reach the root zone.
2. Encourages Healthy Root Growth
Excessive thatch can suffocate roots or encourage shallow rooting.
Dethatching allows roots to grow deeper and stronger.
3. Reduces Risk of Disease and Pests
Thick thatch holds moisture and creates a warm environment for fungi, insects, and diseases.
Removing it helps prevent mold, fungi, and harmful pests.
4. Improves Lawn Appearance
Dethatched lawns look greener and more uniform because the grass isn’t competing with dead material.
It can also make mowing easier and more effective.
5. Boosts Effectiveness of Fertilizer and Overseeding
If you're applying fertilizer or overseeding, dethatching beforehand ensures those inputs make direct contact with the soil, increasing their impact.
When to Dethatch:
Cool-season grasses (like fescue, bluegrass): Early spring or early fall.
Warm-season grasses (like Bermuda, zoysia): Late spring through early summer.