Mulch for a 20x20 Bed: Yards & Bags Needed
A 20 × 20 ft bed covers 400 sq ft. Spread 3 inches deep, it takes 100 cubic feet of mulch: 3.7 cubic yards, or 50 bags of 2 cu ft. Change the depth or bag size below.
3.7 cubic yards, or 50 bags of 2 cu ft
- Cubic yards
- 3.7
- Cubic feet
- 100
- Bags
- 50 × 2 cu ft
- Area
- 400 sq ft
- 2–3 inches is the usual depth for beds; 3–4 inches suppresses weeds better.
- Bulk mulch is sold by the cubic yard and is usually cheaper above ~2 yards.
Frequently asked questions
How many bags of mulch for a 20x20 bed?
50 bags of 2 cu ft at 3 inches deep.
Developers: GET /api/mulch-calculator returns JSON.