Starting a Compact Vegetable Plot in a Backyard

Start With the Space You Actually Have

Most backyard plots are smaller than they look on paper once you allow for a shed, a washing line and the neighbour's overhanging sycamore. Before you buy a single seed packet, spend an afternoon outside with a tape measure and a notebook.

Watch where the sun falls at nine in the morning, at midday and at four in the afternoon. Most vegetables want six to eight hours of direct sunlight to crop well; salad leaves and chard will manage on five. Mark where the fence shadow lands in March, then check again in June — it shifts further than you'd expect, and a bed that looks gloomy in early spring may be perfectly bright by May.

Check your water access too. If the tap is on the far side of the house, either plan beds near it or budget for a hose and a couple of water butts. Hauling cans from the kitchen sink gets old by the second week of July.

Raised Beds: Get the Dimensions Right

Raised beds earn their place in a compact garden. You control the soil, you can work them earlier in spring because they drain and warm faster, and you never compact the ground by treading on it.

• Keep beds 1.2m wide — that's the furthest most adults can comfortably reach without stepping onto the soil.
• Aim for 2m to 3m long. Anything longer and you'll spend your life walking round the ends.
• 15–25cm high is plenty if you're building on decent ground. Over paving, gravel or heavy clay, go to 30cm so roots have a genuine depth of good soil.
• Run beds north to south where you can, so plants catch sun on both sides through the day.

Untreated timber, heat-treated boards or recycled plastic all work well. Avoid timber soaked in old-style preservatives, and line reclaimed scaffold boards on the inside before filling. Fill with a mix of sieved topsoil, well-rotted compost and a little grit for drainage — not just multipurpose bagged compost, which shrinks and dries out alarmingly.

Plan Paths and the Working Bits First

The classic first-timer's mistake is filling every square metre with growing space, then discovering there's nowhere to kneel. Paths aren't wasted ground; they're what makes a small plot workable.

• 45cm is a reasonable minimum between beds.
• 75cm if you want to push a wheelbarrow or kneel comfortably between crops.
• Bark chip is cheap and kind to knees. Gravel needs edging to stop it wandering. Paving slabs are permanent but can be slippery when wet.

Then find room for the unglamorous essentials. A compost bin or bay of at least 1m x 1m x 1m will heat properly and give you decent material within a year; site it near a path rather than in your sunniest corner. A water butt beside a downpipe is worth more than any gadget. A small lidded caddy for kitchen scraps saves endless trips to the bin.

Close Spacing Without Crowding

In a small plot you grow in blocks rather than long rows, which shades the soil, suppresses weeds and squeezes more plants into the same area. The trade-off is competition, so close spacing only works if you feed and water properly.

• Salad leaves and rocket: 15cm apart, cut and come again.
• Bush tomatoes: 45cm apart, trained up a single cane.
• Climbing French beans: 20cm apart in a block with a wigwam of canes.
• Beetroot and turnips for baby roots: 10cm apart.
• Chard, kale and winter greens: 30cm apart and pick outer leaves only.

Grow upwards wherever you can. A wigwam of climbing beans, a trough of trailing tomatoes or a few cucumbers against a sunny wall will double your harvest from the same footprint. Just remember that anything vertical casts shade — put it on the northern edge.

Quick Crops and Succession Sowing

Small plots reward speed. Sow little and often rather than one enormous row that matures in a single week and leaves you drowning in courgettes.

Radishes are ready in three to four weeks. Rocket, mizuna and cut-and-again salad in four to six. Spring onions, baby spinach and coriander follow in six to eight. Beetroot, baby turnips and dwarf French beans crop in eight to twelve weeks.

Sow a short row or a square foot of each every two to three weeks from March to August, and you'll have a continuous supply rather than a glut followed by famine. Keep a few modules of salad on a windowsill or in a cold frame to plug gaps as they appear. Once a crop finishes, don't leave bare soil — fork in a handful of compost and sow something else the same afternoon.

Feeding the Soil Through the Year

Every crop you take out removes something, so put it back. Each spring, spread 5–8cm of well-rotted compost or manure over the beds and let the worms pull it down; there's no need to dig it in. Through summer, mulch around thirsty crops with grass clippings or compost to hold moisture.

Water deeply and less often, aiming at the roots rather than the leaves, ideally in the early morning. A soaker hose on a timer is the single best investment for a busy household.

Finally, keep that notebook going. Note what you sowed, when it cropped and what bolted or sulked. After two seasons you'll have a plan tailored precisely to your patch of Britain — which is worth more than any general guide, including this one.