Bulb Spacing Calculator
Estimate how many bulbs are needed to fill a bed at a selected center-to-center spacing.
Results
Bed area
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Estimated bulbs
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Use the result as a planning estimate and verify project-specific measurements, product information and site conditions where relevant.
How it works
The calculator divides planting area by the approximate area occupied by each bulb position.
bulbs ≈ ceil(area ÷ area per bulb)Worked example
An 8 ft × 4 ft bed at 6 in spacing requires roughly 128 bulbs on a square grid.
Assumptions
- Spacing is treated as center-to-center.
Limitations
- Naturalized planting patterns and irregular edges can change the practical quantity.