Bulb Spacing Calculator

Calculator Pro Zone

Bulb Spacing Calculator

Tip: Many bulbs prefer spacing of 2–3× bulb diameter. Use triangular spacing to maximize density.

Bed Dimensions

Bed Length (ft)

Bed Width (ft)

Bulb Settings

Bulb Diameter (in)

Spacing Factor (× diameter)

Layout Pattern

Recommended Spacing

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Planting Density

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Total Bulbs Needed

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Approximate Layout

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Bulbs per ft² = 1 / s² (grid) or 2 / (√3 × s²) (triangular), where s is spacing in feet