Why 2 to 4 Inches of Mulch Hold Water and Stop Weeds: 5 Practical Reasons for Gardeners

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5 Reasons 2 to 4 Inches of Mulch Is the Sweet Spot for Moisture Retention and Weed Control If you've ever spread mulch and wondered why people recommend "about 2 to 4 inches" and not more or less, you're not alone