How much soil for a 4x8 raised bed?
A 4x8 raised bed filled 12 inches deep holds 32 cubic feet of soil: about 22 bags of 1.5 cu ft raised-bed mix.
| Soil depth | Cubic feet | 1.5 cu ft bags | 2 cu ft bags | Cubic yards |
|---|---|---|---|---|
| 6 in | 16.0 | 11 | 8 | 0.59 |
| 8 in | 21.3 | 15 | 11 | 0.79 |
| 10 in | 26.7 | 18 | 14 | 0.99 |
| 12 in | 32.0 | 22 | 16 | 1.19 |
Soil settles, so fill slightly above the top or plan to top up after the first watering. Many gardeners fill the bottom of deep beds with branches or leaves to save on soil.