Mulch Coverage Formula:
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Mulch coverage refers to the area that a given volume of mulch will cover at a specified depth. Proper calculation ensures you purchase the right amount of mulch for your landscaping needs.
The calculator uses the mulch coverage formula:
Where:
Explanation: The formula converts cubic yards to square feet coverage based on your desired mulch depth.
Details: Correct mulch depth (typically 2-4 inches) is crucial for weed suppression, moisture retention, and plant health while avoiding problems caused by over-mulching.
Tips: Enter volume in cubic yards and desired depth in inches. Typical mulch depth is 2-4 inches for most applications.
Q1: How much mulch do I need for a 100 sq ft area?
A: For 3 inches depth: 100 × (3/12) ÷ 27 ≈ 0.93 cubic yards (or about 1 cubic yard).
Q2: What's the ideal mulch depth?
A: 2-4 inches is typical. Use 1-2 inches for fine mulch, 3-4 inches for coarse mulch.
Q3: How many bags of mulch equal 1 cubic yard?
A: Typically 13.5 bags (2 cubic feet each), but check bag sizes as they vary.
Q4: Should I remove old mulch before adding new?
A: Generally no - just top up to maintain proper depth after old mulch decomposes.
Q5: How often should mulch be replaced?
A: Annually for appearance, though organic mulches break down at different rates.