Calculate plant positions for grid or staggered spacing

Count boundary-to-boundary planting positions on a square or staggered grid inside a rectangular bed.

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ToolPlant Spacing Calculator
Input
Output
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How it works

A square grid counts floor(side ÷ spacing) plus the first boundary point on each axis. A staggered layout separates rows by sin(60°) × spacing and shifts every second row by half the horizontal spacing, so alternate rows can contain fewer positions near an edge.

Formula
square-axis count = floor(side ÷ spacing) + 1
staggered row gap = sin(60°) × spacing
  • The geometry has no crop default; spacing must come from the species, cultivar, equipment, and growing method.

Worked example

Boundary positions in a 2 × 1 m bed
Count a square grid at 30 cm spacing from the first boundary point
Input
											Length m: 2
Width m: 1
Spacing cm: 30
Layout: rows
Output
												Plants needed: 28
Rows: 7
Plants per row: 4
Row spacing cm: 30

When to use this

Nursery plug beds, orchard stake plans, and regular drip-emitter layouts count positions from known spacing.

Edge cases

  • Using floor(side ÷ spacing) without adding the first boundary point undercounts a boundary-to-boundary row.
  • A half-spacing offset can make every second staggered row one position shorter.
  • A mathematically fitting count does not establish agronomic spacing for a crop or orchard.