Plant Spacing Calculator

Estimate plant counts for foundation beds, hedges, and repeating landscape runs with a quick row-versus-stagger check.

Operated by: Cloudtopia Maintenance: Updated when formulas, supplier packaging, or guidance change.
Units:
Project type

Count plants across a planted area.

Pattern

Straight rows or a single line.

Pick a preset to seed the inputs, then fine-tune the numbers if your plant size or nursery stock calls for it.

Common spacing for foundation plantings that need to fill in without crowding.

Foundation plantings are the right place to sanity-check mature spread before you buy. Tighter spacing closes in faster; wider spacing looks cleaner early but can read sparse until the plants size up.

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How the calculator works

Use bed area when you are filling a planting bed and linear run when you are spacing a border, foundation strip, or hedge line. The spacing preset seeds the numbers, and the mature spread check keeps the final count tied to how the plants actually grow.

Bed area, straight rows: plants = area / spacing^2

Bed area, staggered rows: plants = area / (spacing^2 x 0.866)

Linear run: plants per row = ceil(run / spacing) + 1

Preset quick reference

Preset Spacing Mature spread
Foundation shrubs
Common spacing for foundation plantings that need to fill in without crowding.
 36 in 48 in
Privacy hedge
A looser hedge spacing that gives shrubs room to knit together over time.
 48 in 60 in
Perennial drift
Good for grouped perennials and smaller shrubs in repeating beds.
 24 in 30 in
Groundcover grid
Tighter spacing for low plants that are meant to close in quickly.
 18 in 24 in

Foundation spread checks

Foundation plantings are where spacing mistakes show up fastest. Tight spacing can create a dense look right away, but it also increases pruning and crowding later. Wider spacing can look cleaner on day one, yet the bed may feel empty until the plants fill in.

FAQ

When should I use staggered spacing? +
Use staggered spacing when you want plants to fill in faster or when a foundation bed needs a fuller look. Staggered rows generally need about 15% more plants than a straight-row grid at the same spacing.
How do I choose a spacing preset? +
Pick the preset that matches the plant size and the look you want at maturity. Foundation shrubs and privacy hedges usually need wider center-to-center spacing than perennial drifts or groundcovers.
Why does mature spread matter? +
Mature spread tells you how wide a plant wants to get. If your spacing is much tighter than mature spread, the bed can crowd in fast. If it is wider, the bed may look sparse until the plants bulk up.