How to Plan a Vegetable Garden: A Winter Guide to Next Year's Plot

The best vegetable gardens are planned at the kitchen table in winter, not in the garden in May. With the beds cleared and the seed catalogues out, November to January is the time to decide what to grow, how much of it and where it will go — before the first sowings of onions and chillies in January, and before the spring rush when popular varieties sell out. This guide walks you through planning a vegetable garden from scratch or improving last year's: reading your site, sizing beds and paths, deciding quantities, fitting in rotation and succession, and turning it all into a sowing timeline and a seed order.

• When to plan November–January, before the first sowings
• Sun At least 6 hours of direct sun for most crops
• Beds Max. 1.2 m wide, with 30–45 cm paths
• Seed order By late January — earliest sowings start then

Why plan your vegetable garden in winter

A plan does three things a spring impulse cannot. It stops you sowing far more than you can use (twenty courgette plants is a famous mistake), it makes sure each crop gets the right spot and follows the right crop, and it tells you exactly which seeds to buy and when to sow them. Winter is also when you can still remember last season clearly: which varieties did well, which bed stayed wet, where the slugs were worst. Write those notes down first — they are the most valuable part of the plan.

Timing matters too. Some crops have to be sown long before spring: onions from seed in January, chillies and peppers from January to February, and tomatoes from late February. If the plan is not ready by then, the season starts late.

Start with the site: sun, shelter and water

Walk the garden and note four things. Sun: fruiting crops such as tomatoes, squash and beans need at least six hours of direct sun in summer; leafy crops like lettuce, chard and spinach cope with less, as our guide to what to grow in shade explains. Shelter: wind lowers yields and snaps climbing beans, so a hedge or fence on the windward side helps. Water: a tap or water butt close by saves hours in July. Soil: wet, heavy patches are better turned into raised beds than fought every year.

Then orientate the beds. Where you can, run beds and rows north to south so both sides get sun during the day, and put the tallest crops — runner beans, climbing French beans, sweetcorn, tomatoes on canes — on the north side of the plot so they do not shade everything else.

Beds, paths and how big to start

Make beds no wider than 1.2 m, so you can reach the middle from either side without stepping on the soil, and any length that suits the space. Paths of 30–45 cm are enough for walking and kneeling; make at least one 60 cm wide for a wheelbarrow. Permanent beds — edged or simply mounded — let you concentrate compost where crops grow, and they suit both no-dig gardening and raised beds.

If you are new, start smaller than you think: three or four beds of about 1.2 × 2.5 m are plenty to learn on and still feed a household with salad, beans, courgettes and roots from June to autumn. A well-kept small plot produces more than a large, weedy one. You can always add beds next year.

What to grow, and how much

Start with a simple list: what does your household actually eat, and what is expensive or hard to buy fresh? Salad leaves, herbs, French beans, courgettes, tomatoes and soft-skinned crops picked young give the best return for the space. Maincrop potatoes and onions take a lot of room for a cheap shop-bought equivalent, so grow them only if you have space to spare.

Then work out quantities. A few rules of thumb for a household of two to four:

• Courgettes: two plants are usually enough; three if you love them.
• Tomatoes: two or three plants per person for eating fresh, more for sauces.
• Lettuce and salad leaves: a short row or a few modules every three weeks rather than one big sowing.
• Runner or climbing French beans: one wigwam of 8–10 plants keeps a family picking all summer.
• Carrots, beetroot and parsnips: one or two rows per sowing, more if you want to store roots for winter.

Leave a little room for flowers too. A row of cut flowers such as snapdragons, zinnias or calendula at the end of a bed brings in pollinators for beans and squash and gives you something to pick for the house.

Fit in rotation, succession and catch crops

Once you know what you are growing, group the crops by family — legumes, brassicas, onions, roots and potatoes, and the squash-and-tomato group — and give each group its own bed. Moving those groups on one bed each year is the heart of crop rotation, and it is far easier to do on paper than in the soil in April.

Next, plan for time as well as space. Fast crops can be squeezed in before, after or between slow ones, and repeat sowings keep the harvest steady; our guide to succession sowing shows how. Finally, check which neighbours help each other, from marigolds near tomatoes to onions beside carrots, in companion planting.

How to plan a vegetable garden: step by step

1. Review last season Note what thrived, what failed, what you ate and what went to waste.
2. Measure and draw the plot Squared paper, one square per 10 cm; mark north, shade, water and wet spots.
3. List crops and quantities What you eat, how much, and how many sowings of each.
4. Assign crop families to beds One family group per bed, moved on next year; tall crops on the north side.
5. Build a sowing timeline Count back from your last frost date and pencil every sowing into a calendar.
6. Check your seed tin, then order Test old packets for germination and order what is missing by late January.

Before you order, sort through last year's packets. Most vegetable seed keeps for several years if stored cool and dry, but parsnips, onions and leeks fade fast; our guide to how long seeds last has a quick germination test and a viability table. When choosing new varieties, the trade-offs between open-pollinated, F1 and organic seed are explained in heirloom vs F1 vs organic seeds.

Common mistakes when planning a vegetable garden

• Planning for everything at once. Ten crops all ready in August means gluts followed by gaps. Stagger sowings instead.
• Beds that are too wide. If you have to step on the bed to reach the middle, you compact the soil you are trying to improve.
• Ignoring shade. Low winter sun exaggerates shade, but summer shade from trees and fences is real — check where it falls in June.
• Ordering too many varieties. Three tomatoes you know beat twelve you have never grown. Try one or two new ones a year.
• Forgetting the winter. Plan a few beds for winter crops such as leeks, kale and winter salad leaves, or sow a green manure when they come free.
• Keeping no records. A plan you do not write down cannot be rotated next year. Keep this year's drawing with your seed packets.

Frequently asked questions

When should I start planning a vegetable garden?
November to January is ideal. The beds are clear, seed is in stock, and you have time to draw the plan before the first sowings of onions and chillies in January and tomatoes from late February.

How big should a beginner vegetable garden be?
Three or four beds of about 1.2 × 2.5 m are a good start. That is enough for salad, beans, courgettes, tomatoes and a few roots, and small enough to keep weeded and watered.

Which way should vegetable rows run?
North to south where possible, so both sides of each row get sun during the day. Put tall crops on the north side of the plot so they do not shade shorter ones.

How do I know how many seeds to buy?
Start from the number of plants you need and the number of sowings, then allow for some failures. A packet of most vegetables is enough for a small garden for a season; long-lived seed such as tomatoes and squash will last several years if kept cool and dry.

An evening with squared paper this winter pays off all next season. When the plan is ready, browse our root vegetables, peas and beans, leafy brassicas and organic vegetable seeds, or see what to start first in the February sowing collection. New to growing food? Begin with our beginner's guide to growing vegetables from seed, browse all our seed collections, or explore the rest of our growing guides.