10, 20 or 50 m² vegetable garden plans: examples to adapt
Three measured plans for 10, 20 and 50 m², with paths, bed access, cautious plant counts and seasonal successions to adapt to your garden.
By Marmanda7 min read
A good vegetable-garden plan does not fill every centimetre. It reserves practical paths first, then places a number of plants you can water, weed and harvest. The examples below occupy 10, 20 and 50 m² in total, including paths; the growing area is therefore smaller.
These are reproducible dimensions and calculations, not universal plans. Sowing windows depend on climate, altitude, soil, variety and protection. Do not infer an autumn sowing date from a month name alone.
Three plans with paths and margins
The dimensions follow a simple access rule: each bed can be reached from both sides and is no wider than 1.40 m. The RHS says a bed under 1.50 m wide should let you reach the centre without standing on the soil; it recommends paths at least 45 cm wide for a wheelbarrow. If wheelchair access is required, the RHS gives 1 m as a path width, so these examples must be redrawn; they are not wheelchair-accessible plans.
Measurements are the outside footprint, including paths. Bed areas are calculated as width × length; paths and margins are the remainder. You can draw the layout to scale on squared paper.
| Total area | Outside rectangle | Growing beds | Paths and margins | Growing area |
|---|---|---|---|---|
| 10 m² | 2.50 × 4.00 m | 1 bed, 1.40 × 3.10 m | two 0.55 m side paths and two 0.45 m end margins | 4.34 m² |
| 20 m² | 4.00 × 5.00 m | 2 beds, each 1.25 × 4.10 m | 0.50 m side and centre paths; 0.45 m end margins | 10.25 m² |
| 50 m² | 5.00 × 10.00 m | 3 beds, each 1.00 × 9.00 m | two 0.50 m side paths, two centre paths and two 0.50 m end margins | 27.00 m² |
The arithmetic is exact: 2.50 × 4.00 = 10, 4.00 × 5.00 = 20, and 5.00 × 10.00 = 50 m². For example, the 20 m² plan uses 4 m across as 0.50 + 1.25 + 0.50 + 1.25 + 0.50, and 5 m along as 0.45 + 4.10 + 0.45. Paths are not planting space.
A cautious planting example for each plot
These quantities use spacings published by the SNHF, rounded down where useful. They show a possible layout, not a harvest forecast. Tomatoes go outside only after the local frost risk has passed; carrots occupy a spring–summer area; spinach may follow in late summer or autumn, only if that same patch is free within the French sowing window.
| Plan | Example crop placement |
|---|---|
| 10 m² | In the single bed: one row of 2 tomatoes at 70 cm; elsewhere, 3 carrot rows 1 m long, 20 cm apart, or 25 plants per row after thinning to 4 cm; if this patch is cleared early enough, it can then take 2 spinach rows 35 cm apart, with 13 plants per row at 8 cm. |
| 20 m² | Bed 1: 2 rows of 4 tomatoes (70 cm along the row, 1 m between rows). Bed 2: 3 carrot rows 2.16 m long (20 cm between rows, 4 cm after thinning), or 55 plants per row; a separate zone takes 2 spinach rows 1.12 m long, or 14 plants per row at 8 cm. |
| 50 m² | Bed 1: 1 row of 8 tomatoes at 70 cm. Bed 2: 3 carrot rows 3.56 m long, or 90 plants per row at 4 cm; a separate zone holds 3 spinach rows 1.92 m long, or 24 plants per row at 8 cm. Bed 3: 2 broad-bean rows 3 m long, 40 cm apart, with 30 seeds per row at 10 cm. |
The calculation keeps each spacing source separate: the SNHF gives tomatoes 60–70 cm between plants and 1 m between rows; carrot rows are 15, 20 or 25 cm apart by root shape, then the final thinning leaves 3–4 cm; spinach rows are 30–40 cm apart and plants are thinned to about 8 cm; broad beans are spaced 10 cm within rows and 40 cm between rows. Check the SNHF guides for tomatoes, carrots, spinach and broad beans, as well as the seed packet for your chosen variety.
The rows fit their bed rectangles but deliberately leave some soil unused. In a temperate French garden, sow carrots within the variety’s window; plant tomatoes outside only when frost is no longer expected; then sow spinach in the carrot patch if it is genuinely free within its late-summer or autumn window. The SNHF restricts some autumn windows to named regions: its broad-bean guide explains this limit. A bed that is still occupied does not get a fictional follow-on crop.
Step 1: start with meals, not seed packets
Write down ten vegetables the household genuinely eats, then reduce the list to five main crops and a few quick follow-ons. A packet of seed is not a planning unit. Two people rarely need twenty-four tomato plants, while one productive courgette may be enough.
Rank crops by value to you: flavour unavailable in shops, price, how often you eat them or the pleasure of growing them. That ranking settles arguments when space runs out — as it does in every real garden.
Step 2: draw the usable area
Measure the available rectangle, mark walls, trees, water points, slopes and daily routes, then draw paths before beds. The RHS advises choosing crops based on what the household eats, space, available time and harvest seasons; it also recommends drawing to scale to avoid overcrowding.
Put tall crops to the north, or on the side where their shade will do least harm. Draw adult plants, not seedlings in pots: a courgette spreads and a supported tomato needs room for tying and picking.
Step 3: turn spacing into quantities
Plant spacing turns a row into a number of plants. Four metres may take five or six tomatoes depending on variety and training; spacing between rows also leaves air and room to work. For every crop, record both spacings, adult width, support and approximate occupancy time.
Our guide to tomato plant spacing explains why variety and training change the count. For a small plot, what to grow in a small garden compares time in the bed instead of trying to fill every square.
Step 4: add time to the drawing
A static plan describes one day. The same bed may hold a spring crop, a summer crop and an autumn crop if the first one really clears before the next crop’s window. Do not put a fixed date on a succession when harvest still depends on variety or climate.
Use the sowing and planting calendar as a general reference, then adjust to your garden. What to plant in October and what to plant in September describe seasonal windows; they are not a personalised forecast.
Three common planning errors
Filling every gap. Paths, margins and temporarily empty areas make work possible. They are not wasted.
Confusing companionship with spatial compatibility. Two plants described as companions can demand the same light or cover one another. Geometry and timing matter more than companion-planting charts.
Designing a perfect rotation before you have a history. In year one, record what was actually grown. Crop rotation becomes useful from that record, not from an abstract four-square diagram.
The plan fits on squared paper
Record the outside dimensions, margins, each path, bed widths, growing zones and quantities. Reserve access before counting plants. If the total does not fit, remove a crop instead of shrinking every spacing.
These manually calculated examples can help you prepare your garden; they are not plans generated by Marmanda.
Geometry sources: RHS, Planning a vegetable garden and RHS, How to make a raised bed. The crop counts above use the linked SNHF guides.