How many shrubs do I need?
Use row length for hedge or tree rows, or area coverage for ground-cover and flower layouts. Replace the default spacing with the spacing recommended for the plant variety.
Spacing depends on mature size
Plant size, mature spread, desired density, row pattern, and maintenance style change spacing. The calculator estimates count, not horticultural suitability.
Layout and replacement buffer
Corners, gaps, irregular beds, double rows, and replacement stock can change the final count. Calculate sections separately when spacing changes.
Before you calculate
- Use row length for hedges and tree rows; use bed area for ground-cover or flower spacing.
- Replace default spacing with mature-size or supplier spacing for the selected plant.
- Calculate sections separately when spacing, rows, or plant varieties change.
Common mistakes
- Using tight visual spacing without considering mature plant spread.
- Ignoring corners, double rows, gaps, and irregular bed shapes.
- Counting plants before confirming sun, soil, water, and climate suitability.
Formula
pieces = ceil((length * (1 + wastePercent / 100)) / pieceLength)
Assumptions
- Measure each run or row separately when spacing or material changes.
- Use supplier stock length, spacing, or layout guidance for the selected product.
- Corners, overlaps, curves, stakes, fittings, and damaged pieces can increase final quantity.
Example
Estimated shrub needed: 16 shrubs
How to calculate shrubs
- Measure the total run length in feet.
- Enter the usable length per piece, roll, board, strip, or section.
- Add waste for cuts, overlaps, corners, and damaged pieces.
- Divide adjusted length by usable piece length and round up to whole units.
- Keep fasteners, connectors, corners, end caps, and layout hardware as separate checks.
Before you buy materials
- Round up to whole plants and consider a small replacement buffer.
- Verify container size, mature spread, spacing, and availability before buying.
FAQ
What is the example shrub shrubs result?
Use total run length, usable unit length, and waste, then calculate the planning result. In the default example, the result is 16 shrubs.
How do I calculate shrubs?
For rows, divide row length by plant spacing and round up. For area coverage, divide planted area by coverage per plant and round up.
Should I use mature spacing or tight spacing?
Use the spacing recommended for the plant and the desired finished look. Tight spacing fills faster but uses more plants.
Does this choose the right plant?
No. It estimates quantity only. Sun, soil, water, climate, mature size, and local availability determine plant choice.
Should I add extra plants?
A small replacement buffer can help, especially for large layouts, but avoid overcrowding the design.
Related calculators
This calculator is for planning estimates only. Verify final quantities with product labels, project conditions, and a qualified professional when accuracy matters.