Mulch for a 15×15 area

2.08 cubic yards (29 bags)

of mulch for 225 sq ft at 3 inches deep: 56.3 cu ft, or 29 bags of 2 cu ft.

A 15×15 foot area is 225 square feet. Most garden beds need 2 to 3 inches of mulch; a fresh bed or a weedy one benefits from 3 to 4 inches.

Mulch for 15×15 by depth

DepthCubic yardsCubic feet2 cu ft bags3 cu ft bags
1 in0.6918.8107
2 in1.3937.51913
3 in2.0856.32919
4 in2.78753825
6 in4.17112.55738

How it’s worked out

  1. 15 × 15 = 225 sq ft.
  2. 225 × 3 in ÷ 12 = 56.25 cu ft.
  3. 56.25 ÷ 27 = 2.083 cu yd, or 56.25 ÷ 2 = 29 bags of 2 cu ft (rounded up).

Change the numbers

Mulch needed

2.08 cubic yards

29 bags of 2 cu ft, or 19 bags of 3 cu ft.

Area225 sq ft
Cubic yards2.08 (about $83 bulk)
Cubic feet56.3
2 cu ft bags29 (about $116)
3 cu ft bags19

Other bed sizes

Questions

How much mulch do I need for a 15×15 area?
2.08 cubic yards at 3 inches deep, or 29 bags of 2 cu ft. At 2 inches it is 1.39 yards (19 bags).
How many bags of mulch for 15×15?
29 bags of 2 cu ft or 19 bags of 3 cu ft at 3 inches deep.
Is bulk or bagged mulch cheaper for 15×15?
Bagged: about $116 for 29 bags. Bulk: about $83 for 2.08 yards, plus delivery. Bulk usually wins above 2 or 3 yards.

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