Plant Spacing Calculator (How Many Plants Fit)
Enter the bed size and the spacing between plants (in the same unit).
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Plant Spacing Calculator (How Many Plants Fit) by TheCalcTools
How the Plant Spacing Calculator (How Many Plants Fit) works
Each plant on a square grid occupies spacing² of ground. On a triangular grid, where alternate rows are offset by half a space, each plant needs spacing² × √3/2, fitting about 15% more plants at the same distance.
Seed packets give the in-row spacing; use it for both directions in a block planting. Leave paths for access.
The formula
Worked example
Using the default values shown in the calculator:
| Bed length | 10 |
|---|---|
| Bed width | 4 |
| Spacing between plants | 1 |
| Layout | Square grid |
- A 10 × 4 bed at spacing 1: 40 plants on a square grid.
Result:
| Plants needed (approximately) | 40 |
|---|---|
| Bed area | 40.00 |
| Plants per unit area | 1.000 |
| Square grid count (rows × plants) | 4 rows × 10 plants |
Frequently asked questions
How many plants in a 4 × 10 ft bed at 12 inches?
About 40 on a square grid, 46 on a triangular grid.
Sources and further reading
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