Estimate How Much
Mulch You Need

Recommended Thickness for Common Mulch Materials

Bark Mulch, 3-4 in.
Cocoa Hulls, 1 in.
Compost, 1-3 in.
Leaves, 4-6 in.
Peat moss, 1 in.
Pine needles, 1-1 1/2 in.
Straw, 6-8 in.
Wood chips, 2-4 in.

Organic Material Needed to Cover 100-Square-Foot Area

Thickness of Organic Material	Requirements per 100 Square Feet

6"	2 cubic yards
4"	35 cubic feet (1.3 cubic yards)
3"	1 cubic yard
2"	18 cubic feet
1"	9 cubic feet
1/2"	4 cubic feet
1/4"	2 cubic feet

Note: There are 27 cubic feet in 1 cubic yard.

Source: Plant Science, Cornell University

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