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Plant Spacing Calculator

How many plants fit a bed at a given spacing — square or triangular grid.

Runs locally·Free, no signup·Updated May 6, 2026
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How it works

A walkthrough, end to end.

  1. 1

    Enter bed length and width.

  2. 2

    Enter plant spacing (center-to-center).

  3. 3

    Pick square or triangular pattern. See plant count.

Reference

Plant count

Square: rows × cols. Triangular: stagger gives ~15% more density. Each plant occupies ~spacing² (square) or spacing² × √3/2 (triangular).

Use cases

What you can do with this.

Vegetable rows

Tomato spacing 24" on center.

Flower beds

Annuals at 6–12" spacing.

Hedgerows

Boxwood at 18–24" centers.

Ground cover

Plug count for area coverage.

Strawberry rows

12–18" spacing in 4-ft beds.

FAQ

Frequently asked.

  • Triangular fits ~15% more plants but is harder to lay out.

  • Yes — measure spacing between plant stems, not edge to edge.

  • No. All math runs in your browser.

  • Inches and feet supported. Use the same unit throughout.