Mulch for a 12×30 area

3.33 cubic yards (45 bags)

of mulch for 360 sq ft at 3 inches deep: 90 cu ft, or 45 bags of 2 cu ft.

A 12×30 foot area is 360 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 12×30 by depth

DepthCubic yardsCubic feet2 cu ft bags3 cu ft bags
1 in1.11301510
2 in2.22603020
3 in3.33904530
4 in4.441206040
6 in6.671809060

How it’s worked out

  1. 30 × 12 = 360 sq ft.
  2. 360 × 3 in ÷ 12 = 90 cu ft.
  3. 90 ÷ 27 = 3.333 cu yd, or 90 ÷ 2 = 45 bags of 2 cu ft (rounded up).

Change the numbers

Mulch needed

3.33 cubic yards

45 bags of 2 cu ft, or 30 bags of 3 cu ft.

Area360 sq ft
Cubic yards3.33 (about $133 bulk)
Cubic feet90
2 cu ft bags45 (about $180)
3 cu ft bags30

Other bed sizes

Questions

How much mulch do I need for a 12×30 area?
3.33 cubic yards at 3 inches deep, or 45 bags of 2 cu ft. At 2 inches it is 2.22 yards (30 bags).
How many bags of mulch for 12×30?
45 bags of 2 cu ft or 30 bags of 3 cu ft at 3 inches deep.
Is bulk or bagged mulch cheaper for 12×30?
Bagged: about $180 for 45 bags. Bulk: about $133 for 3.33 yards, plus delivery. Bulk usually wins above 2 or 3 yards.

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