Calculating your plants that fit is straightforward once you know the Plant Spacing formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Plant Spacing Calculator.
What is Plant Spacing?
The Plant Spacing calculation tells you your plants that fit from a few simple inputs. The figure you are solving for here is the plants that fit.
The Plant Spacing formula
This calculation combines several inputs through a multi-step method rather than a single one-line formula. Enter the values below and the calculator resolves each step in order. The inputs it needs are:
- Bed area — a value measured in m². Example: 100 m².
- Row spacing — a value measured in cm. Example: 50 cm.
- Plant spacing — a value measured in cm. Example: 30 cm.
How to calculate it step by step
- Write down the bed area (for example, 100 m²).
- Write down the row spacing (for example, 50 cm).
- Write down the plant spacing (for example, 30 cm).
- Apply the formula above to get your plants that fit.
- Double-check the result with the Plant Spacing Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Bed area | 100 m² |
| Row spacing | 50 cm |
| Plant spacing | 30 cm |
| Plants that fit | 666 |
With bed area of 100 m², row spacing of 50 cm and plant spacing of 30 cm, the plants that fit works out to 666.
Example 2
With bed area of 200 m², row spacing of 50 cm and plant spacing of 30 cm, the plants that fit works out to 1,333.
| Result | Value |
|---|---|
| Plants that fit | 1,333 |
Example 3
With bed area of 50 m², row spacing of 50 cm and plant spacing of 30 cm, the plants that fit works out to 333.
| Result | Value |
|---|---|
| Plants that fit | 333 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Plant Spacing Calculator does it instantly, for free, with the formula and a worked example built in.
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