How big should a community garden plot be?

A traditional full allotment plot in Britain is 10 rods, about 250 square metres, and many sites now let half plots of about 125 square metres. Choose the size your group can actually keep.

How wide should the beds be?

4 feet (about 1.2 m) is the usual maximum, narrow enough to reach the centre from the path without stepping on the soil. Paths run between beds.

How many plants go in one square of a square-foot bed?

1, 4, 9 or 16 plants per square, depending on the crop — large crops take one, fine crops like carrots take sixteen.

What compost ratio should we aim for?

A carbon-to-nitrogen ratio near 25-30:1, mixing green materials like kitchen scraps with brown materials like dry leaves.

250 m²Full allotment plot in Britain

125 m²Half plot

25-30:1Compost C:N ratio

4 ftUsual maximum bed width

Start a garden with your street

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A community garden is one piece of land gardened collectively by a group of people, using either individual plots or shared beds. This reference covers the sizes you plan with, the rules a group writes down, and the ordered steps from finding land to the first planting day.

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Plots · Beds · Rules · Water · Compost · First season
A working reference for starting and running a community garden in your neighbourhood.

Plots · Beds · Rules · Water · Compost

What this page covers

4 ftUsual maximum bed widthAbout 1.2 m — the width that keeps the centre reachable from the path.

16Squares in a standard bedA 4 ft square bed divided into a grid of 1-foot squares.

250 m²Full plot in Britain10 rods, the traditional full allotment plot size.

Plot and bed sizes

Plot and bed sizes, path widths and the square-foot grid — the numbers a layout is planned with.
Item	Size	Notes
Full allotment plot (Britain)	10 rods, about 250 m²	The traditional full plot let to one gardener.
Half plot	about 125 m²	The size many sites now let on sites with waiting lists.
Bed width (maximum)	4 feet (about 1.2 m)	Narrow enough to reach the centre from the path.
Standard square-foot bed	4 ft × 4 ft (about 1.2 m × 1.2 m)	Divided into a grid of 16 one-foot squares.
Plants per square	1, 4, 9 or 16	Depending on the crop: large, medium, small or fine.
Compost C:N ratio	25-30:1	Green materials mixed with brown materials.
Paths	Between beds	So the centre of every bed is reachable without stepping on soil.

Plot and bed sizes, path widths and the square-foot grid — the numbers a layout is planned with.

What a community garden actually is

A community garden is a single piece of land gardened collectively by a group of people, using either individual plots or shared beds.

The land is one continuous piece, not scattered patches. Within it, the group decides how to divide labour and space: some gardens run on individual plots where each gardener tends their own ground, others run on shared beds worked together by whoever is present.

The common forms are allotment gardens, neighbourhood shared gardens, donation gardens and school gardens. Each form answers a different question — who eats the produce, who does the work, who the land is meant to serve.

What all forms share is the collective arrangement: the rules, the paths, the water point and the compost system are decided by the group, not by one owner.

Allotment gardens — individual plots let to gardeners, usually on a waiting list.
Neighbourhood shared gardens — one piece of land worked collectively by residents.
Donation gardens — produce grown to be given away rather than sold.
School gardens — plots used for teaching, often with shorter growing seasons.

Terms used on this page

Community garden: A single piece of land gardened collectively by a group of people, using either individual plots or shared beds.
Allotment plot: A portion of a community garden let to one gardener; a traditional full plot in Britain measures 10 rods, about 250 square metres.
Half plot: About 125 square metres, the size many sites now let when a full 250 m² plot is too much for one gardener.
Reach rule: A bed is too wide if its centre cannot be touched from the path without stepping on the soil; 4 feet (about 1.2 m) is the usual maximum width.
Square foot gardening: A method that divides a bed into a grid of 1-foot squares, planted with 1, 4, 9 or 16 plants per square depending on the crop.
Carbon-to-nitrogen ratio: The balance of brown and green materials in compost; compost works best near 25-30:1.

Common questions about starting a community garden

How big should a community garden plot be?: A traditional full allotment plot in Britain is 10 rods, about 250 square metres, and many sites now let half plots of about 125 square metres. Choose the size your group can actually keep.
How wide should the beds be?: 4 feet (about 1.2 m) is the usual maximum, narrow enough to reach the centre from the path without stepping on the soil. Paths run between beds.
How many plants go in one square of a square-foot bed?: 1, 4, 9 or 16 plants per square, depending on the crop — large crops take one, fine crops like carrots take sixteen.
What compost ratio should we aim for?: A carbon-to-nitrogen ratio near 25-30:1, mixing green materials like kitchen scraps with brown materials like dry leaves.

How this record was assembled

The content is drawn from established practice on community garden layout, allotment plot sizes, square-foot planting grids and compost ratios. Nothing on this page is a price, a contact or a claim about a specific organisation.

Reference basis

Standard practice on allotment sizes, bed widths, square-foot grids and compost carbon-to-nitrogen ratios.