Orchard Tree Spacing Calculator
Lay out orchard grids: tree count, density, and ground per tree.
What it does
An orchard is a grid, and the grid sets cost for decades. Trees per block decide nursery orders, trellis posts, irrigation Laterals, spray hours, and light in the lower canopy. A spacing error compounds every season, so the arithmetic deserves care before the first hole is dug.
The tool above lays out that grid. Enter block area with row and tree spacing in metric or imperial. It returns whole trees, density per hectare or acre, and ground per tree. Defaults describe 1000 m2 at 5 by 3 m, so the page opens solved at 66 trees, 666.7 per ha, and 15 m2 each.
Rootstock and gear drive the choice more than habit. Dwarf trees on wires thrive near 3 to 4 m rows, while vigorous free standing trees need 6 to 8 m for ladders and shade control. The imperial mirror (10764 ft2 at 16.4 by 9.84 ft) returns the same 66 trees at 269.9 per acre, so crews in either system order the same nursery stock.
Density reads two ways for a reason. Per hectare or per acre scales the order to any block, while area per tree judges daily work: can the mower pass, will spray reach inside, does light hit the lower fruit. Tight grids pay early and charge later in pruning and disease pressure.
Use the table to compare classic layouts, then run your block minus lanes and sheds. The count rounds down because edge strips rarely hold a productive tree. Variety, chill hours, pollination partners, and soil depth still shape the final plan, but spacing math comes first.
How to use
- Pick metric or imperial.
- Enter the cropped block area minus lanes.
- Enter row spacing and in row tree spacing.
- Read tree count first.
- Read density for nursery orders at scale.
- Check area per tree against equipment width.
Formula
- Area
- Cropped block area: m2 metric, ft2 imperial.
- Row spacing
- Distance between rows.
- Tree spacing
- Distance between trees along the row.
- Rectangle
- Ground each tree owns.
Spacings stay in meters for metric and feet for imperial with no mixing. Density uses 10000 m2 per hectare and 43560 ft2 per acre. Counts round down because a partial tree spot grows nothing; real blocks also lose ground to lanes, sheds, and wet corners.
Worked example
Example: 1000 m2 at 5 x 3 m
A 1000 m2 block uses 5 m rows with 3 m between trees. Find trees, density, and area each.
- Area per tree = 5 m x 3 m = 15 m2.
- Trees = floor(1000 / 15) = floor(66.67) = 66.
- Density = 10000 / 15 = 666.7 per ha.
- Each tree owns 15 m2.
- Imperial mirror: 10764 ft2 at 16.4 x 9.84 ft also gives 66 trees.
- That is 269.9 per acre at 161.4 ft2 each.
Reference table
| Spacing | Per tree | Per ha | Per acre |
|---|---|---|---|
| 3 x 2 m | 6 m2 | 1666.7 per ha | 674.5 per acre |
| 4 x 3 m | 12 m2 | 833.3 per ha | 337.2 per acre |
| 5 x 3 m | 15 m2 | 666.7 per ha | 269.9 per acre |
| 6 x 4 m | 24 m2 | 416.7 per ha | 168.6 per acre |
Limits
- Geometry only; soil, water, and chill still rule.
- Ignores lanes, sheds, and wet spots (subtract first).
- No pollination or rootstock vigor modeling.
- Edge strips rarely hold full trees.
Common mistakes
- Dividing acres by m2 spacing without converting.
- Counting lanes and sheds as cropped ground.
- Rounding up partial tree spots.
- Spacing for the nursery price instead of the mature canopy.
- Forgetting pollinator partners in single variety blocks.
Try it yourself
Quick checks. Answers sit tucked under each question.
Half block: 500 m2 at 5 x 3 m?
33 trees. Density stays 666.7 per ha. Each still owns 15 m2.
Wider grid: 1000 m2 at 6 x 4 m?
41 trees. Density 416.7 per ha. Each owns 24 m2.
1000 m2 at 4 x 3 m? Work it by hand.
Rectangle = 4 x 3 = 12 m2. Trees = floor(1000/12) = 83. Density 833.3 per ha.
Questions
How is the tree count found?
Block area divided by the rectangle each tree owns (row spacing times tree spacing), rounded down. Headlands and roads come off the area first.
What is planting density?
Trees per hectare = 10000 / spacing rectangle in m2. At 5 x 3 m that is 666.7 per ha.
How do I pick spacing?
Dwarf trees on dwarfing roots accept 3 to 4 m rows; vigorous standards need 6 to 8 m. Match spacing to rootstock, equipment, and light.
Does it work in feet and acres?
Yes. Pick imperial and enter square feet with foot spacings. The 10764 ft2 mirror of the example also returns 66 trees.
What does tight spacing cost?
Tighter grids raise early yield but demand more pruning, thinning, and disease watch. Very tight trees shade out lower fruit.
Do I subtract lanes and sheds?
Subtract turning areas, sprayer lanes, sheds, and wet spots from the block before dividing. The tool counts only cropped ground you enter.