Compost & Mulch Calculator

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How Much Compost Do You Need?

For mulching, spread 1-3 inches of compost on beds in fall or spring.

As a soil amendment before planting new beds, use 1-3 inches of compost dug or tilled into the soil. (Use 3 inches to improve sandy soils, or 1-2 inches for heavy clay soils).

How thick a layer do you want? 

You will need: