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How Much Mulch for 150 Square Feet?

1.39cubic yards

at 3 inches deep — about 19 bags (2 cu ft each) or 0.49 tons

Depth	Cubic yards	Cubic feet	2 cu ft bags	Approx. tons
2 in	0.93 yd³	25 ft³	13	0.32
3 in (typical)	1.39 yd³	37.5 ft³	19	0.49
4 in	1.85 yd³	50 ft³	25	0.65

Most beds do well with 2–3 inches of mulch. Use 3 inches for weed suppression, 2 inches around annuals and shallow-rooted plants, and keep mulch a couple of inches away from trunks and stems.

The math: 150 sq ft × depth in feet ÷ 27 = cubic yards. One cubic yard of mulch covers 162 sq ft at 2" · 108 sq ft at 3" · 81 sq ft at 4".

Bulk mulch by the cubic yard is usually much cheaper than bags once you need more than about 1 yard (13–14 bags).

Different area?

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