Soil Amendment Calculator
Calculate how many bags of soil amendment are recommended for your plants.
- Select Container Type, then select the size from the dropdown menu.
- Add the number of plants for the size container selected.
- Click Add Plant Type button to create another card for multiple sizes.
- Press the Red X to remove a card from the calculation.
The recommended number of bags of various brands of soil amendment will show in the Total field.
Be sure to set the container type and the specific size for each card. The results will automatically be calculated for you.
How many cups to use per plant
| Cups Per | Cubic Feet | Container Size | Plant Height | Caliper Size |
|---|---|---|---|---|
| 12 cups | ~0.1 cu ft | #1 | ||
| 30 cup | ~0.1 cu ft | #2 | ||
| 44 cups | 0.25 cu ft | #3 | ||
| 61 cups | ~0.5 cu ft | #5 | ||
| 73 cups | ~0.5 cu ft | #6 | ||
| 122 cups | ~0.75 cu ft | #7 | ||
| 147 cups | ~1 cu ft | #10 | 3' to 4' | |
| 225 cups | 1.25 cu ft | #15 | 4' to 5' | 1" to 1.5" caliper |
| 288 cups | ~1.75 cu ft | 5' to 6' | ||
| 350 cups | 2 cu ft | #20 | 6' to 7' | 1.75" to 2" caliper |
| 415 cups | 2.5 cu ft | #25 | 7' to 8' | 2.25" to 2.5" caliper |
| 518 cups | 3 cu ft | 8' to 10' | 2.75" to 3" caliper | |
| 570 cups | 3.25 cu ft | 10' to 12' | 3.25" to 4" caliper | |
| 627 cups | 3.5 cu ft | 12' to 14' |
- Soil Building Compost: 1.5 cu ft
- Rich and Complete: 1.5 cu ft
- Soil Pep: 2 cu ft
- Acid Planting Mix: 2 cu ft
- Soil Building Compost: 3 cu ft