What Vegetables Can I Plant Now? UK Planting Calendar 2026

UK Growing Seasons: Your Complete Vegetable Planting Guide

The UK vegetable growing season runs from March to October for most outdoor crops, but with planning you can sow, grow, or harvest something in every month of the year. Success depends on three things: local last-frost dates, soil temperature, and choosing crops that suit your region. Get those right and the rest is just watering.

Safe-to-Plant-Out Dates by Region

Frost is the single biggest factor in UK vegetable planting. Tender crops like tomatoes, courgettes, runner beans, and squash will be killed by a late frost. The dates below are safe-to-plant-out dates per RHS guidance. They sit 2–4 weeks later than the meteorological last frost because late cold snaps still hit after the 'official' last frost passes. Plant tender crops on these dates, not the older bare-frost dates.

• Southern England & London: Early-to-mid May
• Midlands & Wales: Mid-to-late May
• Northern England: Late May to early June
• Scotland & Northern Ireland: Early-to-mid June, later at altitude

If you are unsure, err on the side of caution. Starting seeds indoors on a sunny windowsill or in a greenhouse gives you a head start without the frost risk. Watch the BBC Weather or Met Office 5-day forecast for late-frost warnings before transplanting, or check tonight's estimated frost risk for your postcode with our garden weather forecast. If you are in a big city, the sow-in-your-city page gives the frost dates and dated sowing windows for major UK cities, or any postcode in England, Scotland and Wales. For postcode-specific timing, our frost date calculator uses the Met Office HadUK-Grid 5 km land cell nearest the centroid of your postcode district and gives both a typical last-frost date and the date it had passed by in nine years out of ten, which is more use than the regional averages above. To turn those dates into a per-crop plan, try the Sow-Window Planner.

Soil Temperature and Germination

Seeds need warm soil to germinate. Even if the air feels warm in March, the soil may still be too cold for most crops. As a general rule:

• 5°C minimum: Hardy crops — broad beans, peas, onion sets, garlic
• 10°C minimum: Most vegetables — carrots, beetroot, lettuce, chard, kale
• 15°C minimum: Tender crops — tomatoes, courgettes, cucumbers, French beans, sweetcorn

A soil thermometer costs about a fiver and saves weeks of frustration from failed sowings. Push it 5cm into the soil at 9am for the most accurate reading. Measuring at midday gives a misleading peak temperature, not the overnight low that determines whether your seeds survive.

How to Use This Planting Calendar

The interactive calendar above covers 30 common UK vegetables. The month strip shows the whole year: tap any month to see what to sow indoors, sow outdoors, plant out, and harvest. The gantt grid shows every crop's full year at a glance with colour-coded cells and segmented markers where activities overlap. Set your region in the bar above the calendar and the recommendations adjust by 1–4 weeks accordingly.

Click any crop name to open its detail drawer, where you will see its full 12-month schedule and can save it to your plan. The plan persists in your browser, prints to a single page, and saves as PDF. Getting ready to plant? Use our compost calculator to work out how much compost you need, or our top soil calculator if you are filling new raised beds.

Last updated 21 August 2026 · Reviewed by Gary Hodson

What to Plant Now UK — August 2026

August is the turn of the season. The big summer harvests are in full flow, and every bed you clear now is your last real chance to sow something that crops before the light goes. Frost is not a factor yet anywhere in the UK, but the clock is: from here on your sowings are racing the FIRST autumn frost, not the last spring one.

Drought note (checked 15 August 2026): after an exceptionally dry summer, nine water companies have temporary hosepipe bans in force. The outdoor sowings here — lettuce, onions, radishes, rocket, spinach, spring onions and turnips — are small-area sowings that a watering can handles well; proceed if you can keep the surface moist through germination. What genuinely needs sustained water is a large bare-soil sowing such as a new lawn: hold that until September, when the rain does the work for you. Your water company's website has the rules for your postcode.

Sow outdoors now: Lettuce, onions, radishes, rocket, spinach, spring onions and turnips.

Sow indoors now: Rocket.

Plant / plant out now: Broccoli, cabbage, cauliflower and rocket.

Harvest now: Beetroot, broad beans, broccoli, cabbage, carrots, cauliflower, chillies, courgettes, cucumber, French beans, garlic, leeks, lettuce, onions, peas, peppers, potatoes, radishes, rocket, runner beans, spinach, spring onions, squash, sweetcorn, tomatoes and turnips.

Source: these lists mirror the calendar's crop-specific RHS guidance. See the RHS source for every crop and the local-variation note.

Do this before September: Order garlic and overwintering onion sets, and lift and dry your onions while the weather is still on your side.

Planning late sowings? Check your first autumn frost date with the frost date calculator — that is the deadline every August sowing works against, and it varies by more than six weeks across the UK. For the full crop-by-crop maths on what still fits, see Still Time to Sow in August?

What Vegetables Can I Plant Now in the UK?

What you can plant in the UK depends on the month. In spring (March–May) sow hardy crops outdoors and start tender ones indoors. In summer (June–August) succession-sow salads and harvest the main crop. In autumn (September–November) plant garlic and overwintering crops. Always check soil temperature alongside the calendar date.

Spring (March – May): The Main Sowing Season

Spring is when most UK vegetable growing begins. The key is soil temperature: most seeds need the soil to reach at least 7–10°C before they will germinate reliably outdoors. A cheap soil thermometer (around £5) is your best investment.

For exact indoor sowing, outdoor sowing, planting and harvest months, use the source-backed month table above. It is generated from the same canonical schedule as the interactive calendar, so there is no second activity table to drift out of date.

Summer (June – August): Succession Sowing & Harvesting

By June, most main crops are in the ground and the focus shifts to succession sowing, planting small batches every 2–3 weeks for a continuous harvest. Keep sowing lettuce, radishes, beetroot, spring onions, and chard. Plant out leeks and brassica transplants (winter cabbage, kale, Brussels sprouts) in July for autumn and winter harvests. This is also peak harvest time for courgettes, tomatoes, French beans, and early potatoes. Pick courgettes when they hit 15cm, before they become marrows. A plant left unpicked for a week stops producing entirely.

Autumn (September – November): Planting for Next Year

Autumn is the most overlooked planting season, but experienced gardeners know how much it matters. Plant garlic cloves and overwintering onion sets in October for an early crop next summer. Autumn-planted garlic produces noticeably bigger bulbs than spring-planted because the cold spell triggers clove formation. Sow overwintering broad beans and hardy pea varieties like 'Douce Provence' for a spring head start. Sow green manures (field beans, phacelia, crimson clover) on empty beds to fix nitrogen and protect the soil over winter. Harvest pumpkins, squash, maincrop potatoes, and onions for winter storage.

Winter (December – February): Planning & Indoor Sowing

Winter is for planning, ordering seeds, and getting a head start with indoor sowing. Start onions and leeks indoors in January. Sow tomatoes, peppers, and aubergines on a warm windowsill in February, as they need the longest growing season of any UK crop. Clean pots, sharpen tools, and plan your succession planting schedule. If you are preparing new beds, use our compost calculator to work out how much material you need.

Sources: Royal Horticultural Society — grow-your-own vegetable guides, RHS Plants for a Purpose 2024 archive. Met Office — UK regional climate averages, accessed July 2026. Met Office HadUK-Grid 5 km gridded observations, 1991–2020, for frost timing — the dataset behind our own frost date calculator. Contains public sector information licensed under the Open Government Licence v3.0. Disclaimer: dates and ranges are guidance — verify against RHS, Met Office, or your local horticultural society before acting on tender-crop transplant decisions.

What Vegetable Seeds Can I Plant Now in the UK?

What you can sow from seed this month is not always the same list as what you can buy as plants. Seeds need the soil warm enough to germinate; plug plants tolerate a bit more stress once their roots are established. So the seed list is usually shorter than the plant-out list, especially early and late in the season.

The quick rule, by soil temperature:

• Soil 5°C or above: hardy sowings — broad beans, peas, and hardy salads in milder spots
• Soil 10°C or above: most root vegetables and brassica sowings
• Soil 15°C or above: tender seed — French beans, courgettes, cucumbers, sweetcorn

Check with a cheap soil thermometer pushed 5cm into the soil in the morning; midday readings give a misleading peak, not the overnight low your seeds have to survive.

For the exact month you are in, tap your month on the interactive calendar above and read the Sow indoors and Sow outdoors columns. Together they are your seed list for the month. If a crop only appears under Plant out, buy a healthy plug plant instead, or keep sowing only if enough season remains for that variety's days to maturity. Before sowing tender seed outdoors, check your postcode's frost timing with the frost date calculator.

What Fruit Can I Plant Now in the UK?

Most people asking "what can I plant now" mean vegetables, but fruit is a genuine second intent and the timing rules are different. Fruit planting in the UK revolves around the dormant season rather than the last frost.

Soft fruit is usually planted bare-root in the dormant season, though pot-grown plants can go in during almost any mild spell:

• Strawberries — runners or pot-grown plants
• Raspberries and blackberries — bare-root canes
• Currants and gooseberries — bare-root bushes
• Blueberries — in ericaceous compost; containers work well

Tree fruit (apples, pears, plums, and cherries) is planted bare-root mainly from November to March while the trees are dormant. Container-grown trees can go in during milder weather at other times of year, provided you water hard through their first season.

Do not treat July the same as January. Summer is for caring, training, and harvesting summer-fruiting crops, and for ordering bare-root stock ready for winter planting. It is not the time to drop bare-root trees into hot, dry soil unless you can irrigate daily. The month strip above stays vegetable-first; use this section when your question is fruit-led.

When to Plant Vegetables in the UK

Most UK vegetable sowing happens between February and August. Hardy crops start in February or March; tender crops wait until after the last frost in May; autumn-sown crops (garlic, overwintering broad beans) go in October–November. Use the calendar above to see what is in season now.

The single biggest predictor of sowing success is soil temperature, not calendar date. A March sowing into cold, wet soil rots; the same seed dropped into 10°C soil in mid-April germinates in five days and overtakes the earlier sowing within a fortnight. Patience is the cheapest tool in the shed.

Timings are based on average UK conditions. If you garden in northern Scotland or at altitude, shift sowing dates 2–3 weeks later in spring and 2–3 weeks earlier in autumn. Coastal gardens (Cornwall, west Wales, the Northern Ireland coast) get a week's head-start on the southern English averages thanks to the Gulf Stream. Urban gardens in London or Manchester are typically a fortnight ahead of the surrounding countryside. The interactive month strip above takes the guesswork out of which crops belong in which week.

Getting ready to plant? Use our compost calculator to work out how much compost you need for your beds, or our topsoil calculator to work out how much top soil you need for new raised beds.

UK Vegetable Planting Guide by Month

The UK vegetable calendar runs from January's planning lull to December's harvest of stored crops. Use this guide alongside the planting calendar above to know exactly what to sow, plant or plant out, and harvest each month. It is the same data the gantt above uses, laid out for skim-reading. Prefer a written walkthrough of each month with links to every seasonal guide on the site? See the UK sowing guide by month.

How this calendar is sourced: each crop row summarises its current crop-specific RHS Grow Your Own guide, checked 21 August 2026. Activities can overlap, so a crop may appear in more than one column in the same month. Timings vary by variety, local weather and whether you grow under cover. See the crop-by-crop RHS source list.

This planting guide covers the UK vegetables people most often ask about. Exact dates vary by location: gardeners in Scotland and northern England should typically add 2–3 weeks to outdoor sowing dates compared to the south of England.

One schedule, not twelve partial copies: use the table above or tap a month in the interactive calendar for its complete indoor sowing, outdoor sowing, planting and harvest lists. Both views use the same reviewed DATA. For seasonal context without another crop schedule, read the UK sowing guide by month.

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Regional Planting Adjustments for the UK

The UK stretches over 600 miles from north to south, and altitude, coastal exposure, and urban heat islands all affect growing conditions. Adjust the planting calendar by the figures below, or set your region in the bar above the calendar to apply them automatically.

Three local factors override the regional averages in the table. Altitude: every 100m of elevation drops the average soil temperature by roughly 0.6°C and pushes the last frost about a week later, so a Pennine garden at 300m is effectively three weeks behind a coastal Yorkshire garden at sea level even though both are in "Northern England". Coastal exposure: the sea moderates extremes, so coastal Cornwall, west Wales and Northern Ireland's coast benefit from Gulf Stream warmth and rarely see deep frost, but salt-laden winds reduce yield on tender crops without a windbreak. Urban heat: London and central Manchester run 1–2°C warmer than surrounding countryside, so urban gardens can sow about a fortnight earlier than the regional table suggests.

If you're at the boundary of two regions or live somewhere with strong microclimate effects (south-facing walled garden, river valley, exposed hilltop), use the frost date calculator for your postcode rather than the table. It uses the Met Office HadUK-Grid 5 km land cell nearest your postcode-district centroid. It does not model your individual garden, so a frost pocket or a walled suntrap will still run either side of the figure.

Tip: A cheap soil thermometer (about a fiver) is the most useful tool for deciding when to sow outdoors. Push it 5cm into the soil at 9am. If it reads 10°C or above consistently for a week, you are safe to sow most crops. For a postcode-specific frost-date estimate that beats regional averages, use the frost date calculator.

5 Common Vegetable Planting Mistakes

The five most common UK planting mistakes share one root cause: ignoring soil temperature in favour of calendar dates. The list below covers the rest. Avoid them and you will save weeks of replanting and the cost of a second round of seeds.

1. Sowing too early. It is tempting to start in February, but seeds sown into cold, wet soil either rot or sit dormant. Wait until soil temperature is right: a few weeks' patience gives better results than a two-month head start in the wrong conditions.
2. Ignoring regional frost dates. The calendar above is based on average UK conditions. If you garden in Scotland or northern England, shift outdoor sowing 2-3 weeks later. Use the regional table above to adjust.
3. Overwatering seedlings indoors. More seedlings are killed by overwatering than underwatering. Keep compost moist but not soaking. If it feels wet when you squeeze it, wait before watering again. Good drainage is essential.
4. Skipping hardening off. Seedlings grown indoors must be gradually acclimatised to outdoor conditions over 7-10 days before planting out. Put them outside during the day, bring them in at night. Skip this step and transplant shock will set your plants back by weeks.
5. Not succession sowing. Planting everything at once gives you a glut followed by nothing. Sow small batches of lettuce, radishes, beetroot, and spring onions every 2-3 weeks for a steady harvest from May to October.

Which Vegetables Grow Fastest in the UK?

Radishes are the fastest UK vegetable, ready to harvest in 4 weeks from sowing. Rocket and salad-leaf lettuce follow at 4 to 5 weeks. Spring onions take 8 to 10 weeks, beetroot 10 to 12 weeks, and courgettes give a heavy crop within 8 to 10 weeks of sowing. All five can be sown directly outdoors from March to August in southern England, or 2 to 3 weeks later in Scotland and the north.

The single biggest factor in fast-cropping is soil temperature, not calendar date. Radishes will germinate at 4°C but grow twice as fast at 15°C, so a sowing into warm late-April soil out-yields a sowing into cold mid-March soil, even though the March sowing went in earlier. A £5 soil thermometer pays for itself in the first season.

Want a continuous radish/salad supply? Sow a short row every 14 days from late March to early September. Use the gantt above to find every fast crop in one view, and our frost date calculator for the soil-temperature window in your postcode.

What's the Best Month to Plant Tomatoes in the UK?

Plant out tomatoes in mid-May for most of the UK, or early June for Scotland and the highlands. Soil temperature should be at least 12°C and the last frost must have passed. Sow seed indoors in February or March on a warm windowsill, prick out into 9cm pots in April, and harden off for 7 to 10 days before transplanting. First fruit ripens late July; harvest runs to October.

Outdoor tomatoes need a sheltered south-facing wall or fence to ripen reliably in the UK climate. Indeterminate (cordon) varieties like 'Gardener's Delight' or 'Sungold' want a single stake and weekly side-shoot pinching. Bush (determinate) varieties like 'Tumbling Tom' suit hanging baskets and patio pots with no staking needed.

Watering matters more than feed. Inconsistent watering is the single biggest cause of split fruit and blossom-end rot. Water deeply twice a week rather than a sprinkle every day. Confirm your last frost date with the frost date calculator before transplanting; a single late frost kills a tomato plant in one night.

5 Easiest Vegetables to Grow in the UK

If you are new to vegetable gardening, start with these five. They are forgiving of mistakes, do not need much space, and give a satisfying harvest in your first season: radishes are ready in 4 weeks, courgettes produce 4kg per plant on average, and runner beans crop from July to October.

1. Radishes. The fastest vegetable you can grow, ready to harvest in just 4 weeks from sowing. Sow directly outdoors from March to September. They need almost no space and are perfect for filling gaps between slower crops. Use our soil calculator if you need to prepare a new bed.
2. Lettuce. Cut-and-come-again varieties let you harvest leaves for months from a single sowing. Sow a short row every 2-3 weeks from March to August for salad all summer. Lettuce grows happily in containers, raised beds, or open ground.
3. Runner beans. Sow outdoors after the last frost (mid-May for most of the UK) against a wigwam or frame. Water regularly once flowering starts. A single row of 8-10 plants will feed a family all summer with minimal effort. Use our fertiliser calculator for the right feed rate.
4. Courgettes. Just 2-3 plants produce more courgettes than most families can eat. Start seeds indoors in April, plant out after the last frost, and keep watered. Harvest when fruits are 15-20cm long for the best flavour. They are practically impossible to kill.
5. Potatoes. Plant seed potatoes in March-April, earth up as the foliage grows, and harvest from June onwards. First earlies are ready in 10-12 weeks and taste incomparably better than shop-bought. Even a large container on a patio works. Check our compost calculator for how much growing medium you need.

Frequently Asked Questions

The questions below are pulled from Google's "people also ask" feature for UK planting queries. Each answer is structured for snippet eligibility: definition first, then a number, then a caveat. The on-page text matches the FAQ schema verbatim so Google can pull from either source.

UK Herb Planting Calendar

UK herbs split into three groups: hardy perennials (rosemary, thyme, sage, chives, mint) that come back every year and need almost no work; tender annuals (basil, dill, coriander) that need warmth and succession sowing; and biennials (parsley) that flower in their second year. Knowing which group a herb belongs to determines whether you sow once and harvest for a decade or sow every three weeks for a continuous supply.

Hardy perennials want poor, well-drained soil and full sun. Mediterranean herbs (rosemary, thyme, oregano, sage) actively struggle in rich UK garden soil, because too much nitrogen produces leggy plants with weak essential-oil concentration. Plant them in a gritty mix and resist the urge to feed.

Tender annuals tell you when they're unhappy: basil collapses overnight if temperatures drop below 10°C, coriander bolts to flower within days of a hot spell. Sow basil in May (or April under glass), coriander every three weeks from March to August using slow-bolt varieties like 'Confetti' or 'Leisure'. The table below covers when to sow, when to harvest, and one practical note per herb.

Tip: The easiest herb garden for a beginner is a large pot with rosemary, thyme, and chives. All three are perennial, low-maintenance, and ready to pick year-round. Add a separate pot of basil in summer and parsley in spring for the five herbs that cover 90% of home cooking.

Companion Planting Guide for UK Vegetables

Companion planting is the practice of growing certain plants together so they benefit each other: attracting pollinators, deterring pests, fixing nitrogen, or providing shade. UK kitchen gardens have used it for centuries, and several pairings (carrots-with-onions, brassicas-with-dill) are documented by the RHS as reducing pest pressure when used alongside conventional crop rotation.

The biology behind companion planting is mostly chemistry. Onions and leeks release sulphur compounds that mask the scent of carrot foliage to female carrot fly; the pest can't find what it can't smell. Tomatoes and basil share a root-zone chemistry that boosts both crops' flavour while basil's volatile oils repel whitefly. Beans (and peas) host nitrogen-fixing bacteria in root nodules, which is why following a bean crop with a nitrogen-hungry brassica is a classic UK rotation pattern.

The flip side is just as real. Brassicas planted near strawberries compete for the same nutrients and stunt both. Tomatoes and potatoes both belong to the Solanaceae family and share blight (Phytophthora infestans), and a single infected potato volunteer can wipe out a tomato bed three rows away. Onions and garlic suppress the rhizobial bacteria that beans and peas depend on for nitrogen-fixing, so legume yield drops noticeably if alliums are nearby.

For a UK plot under 50m², you don't need to design a complex companion scheme. Apply two simple rules: never plant the same family in the same spot two years running (rotation), and dedicate one planting hole in five to a flower or herb (marigold, nasturtium, calendula, dill, basil). That covers ~80% of the practical benefit without bookkeeping.

The simplest companion planting rule: grow flowers among your vegetables. Marigolds, nasturtiums, and calendula attract beneficial insects, deter pests, and add colour to the vegetable patch. Dedicate one in every five planting spaces to flowers and you will notice fewer pest problems immediately.

Growing Vegetables in Containers — What Works in Pots

Most home vegetables grow well in containers on a patio, balcony, or sunny doorstep. The two factors that decide success are pot size and watering consistency. Containers dry out faster than open ground, sometimes twice daily in July, and shallow pots stunt root crops and beans. Match the crop to the right minimum volume, water with a routine rather than guesswork, and a south-facing balcony will out-yield a shaded back garden.

Tomatoes, courgettes, runner beans, salad leaves, radishes, spring onions, chillies, and potatoes (in grow bags) are the eight crops that perform best in containers. Crops to avoid in pots: parsnips and other long taproots (need 30cm+ depth and consistent moisture), Brussels sprouts and kale (top-heavy, blow over in autumn winds), and main-crop maincrop potatoes (yield drops sharply vs ground).

Compost choice matters more than fertiliser dose. A peat-free multipurpose with added perlite (4 parts compost : 1 part perlite) drains well and holds nutrients without compaction. Top up with slow-release fertiliser granules at planting and switch to weekly liquid feed once flowers appear.

Essential container tips: Use multipurpose compost mixed with perlite for drainage. Water every day in summer, twice daily in heatwaves. Add slow-release fertiliser granules when planting and liquid feed weekly from June. Use our compost calculator to work out how much compost you need for your pots and planters, or our soil calculator for raised beds.

How Many Plants Per Square Metre?

"How many plants per square metre" is a density question, not a calendar question. Even so, it is how most gardeners finish the job once they have picked a crop and a sowing month. Plant too densely and everything competes for light and water; too sparsely and you waste bed space you paid to fill.

Rough outdoor guides (variety and bed width will shift these):

Row crops such as carrots and onions are better planned as plants or grams per metre of row than as a flat per-square-metre number, since row spacing does most of the work for them.

For exact spacings by crop, use the free plant spacing calculator, then come back to this calendar for when to sow or plant out in your UK region.

How Long Do Vegetables Take to Grow?

"How long until I can eat it?" is the question every new gardener asks. The shortest answer in the table below is 4 weeks (radishes); the longest is 40 weeks (autumn-planted garlic). Most UK crops fall between 8 and 16 weeks from sowing to first harvest.

Three factors stretch or shrink those numbers. Soil temperature is the biggest: every crop has a minimum germination temperature, and a March sowing into 6°C soil sits dormant for two to three weeks before it starts to grow, while an April sowing into 12°C soil germinates in 5 days. Daylight is the second. Long-day crops like onions need 14+ hours of summer light to bulb up, which is why UK-grown onions never beat their southern-European equivalents on size. Variety choice is the third: first-early potato varieties crop in 10 weeks, maincrop varieties take 22.

For a continuous summer harvest, mix crop times deliberately: pair a 4-week radish sowing with a 16-week tomato bed and a 22-week parsnip row, all sown in March, and you'll be eating from the garden every week from April through October.

Want results fast? Start with radishes, rocket, and lettuce: first harvest within a month of sowing. For something more substantial, courgettes and French beans give huge yields in 10 weeks. The slowest crops (garlic, parsnips, and Brussels sprouts) are planted months in advance but reward patience with some of the best flavours in the garden.

UK Growing Season Length by Region

The UK covers over 600 miles from the Isles of Scilly to Shetland, and planting dates vary significantly by region. The single biggest factor is your local last frost date. Tender crops planted out before this date will almost certainly be killed. The table below gives typical last frost and first frost dates by region, along with the growing season length and practical advice for adjusting the planting calendar.

These dates are averages; in any given year, frost can arrive earlier or later. Urban gardens benefit from the heat island effect and are typically 1–2 weeks ahead of surrounding countryside. Coastal areas are milder than inland valleys at the same latitude. Gardens at altitude (above 200 metres) should add an extra week to the adjustments above.

Know your exact frost dates: Use our frost date calculator to get a postcode-specific estimate of your local last and first frost dates. It uses the HadUK-Grid 5 km land cell nearest your postcode-district centroid — more precise than regional averages, though it does not model an individual garden. Knowing your frost dates is the single most important piece of information for planning your vegetable garden.

If you are in a colder region, you can effectively extend your growing season by starting seeds indoors on a warm windowsill or in a heated propagator from February, using cloches and horticultural fleece to protect young plants outdoors, and growing in a greenhouse or polytunnel for tender crops like tomatoes and peppers. Even a simple cold frame (from around £30) can add 4–6 weeks to your growing season.

How to Use a Vegetable Planting Calendar

A vegetable planting calendar is the most useful tool a UK gardener can have. It takes the guesswork out of growing by telling you exactly what to do and when, but only if you understand the key terms and use it correctly. Here is a practical guide to getting the most from the interactive calendar above.

Understanding the Key Terms

The calendar uses four colour-coded activities. Here is what each one means in practice:

• Sow Indoors — Plant seeds into small pots or seed trays filled with seed compost, and keep them in a warm place (15–20°C) until they germinate and grow into small seedlings. A sunny south-facing windowsill, a heated propagator, or a greenhouse all work well. This gives tender crops a head start before conditions are warm enough outdoors.
• Sow Outdoors (Direct Sow) — Plant seeds directly into the ground where they will grow to maturity. Prepare the soil first by raking to a fine tilth (crumbly texture) and removing large stones. Make a shallow trench (called a drill) to the depth stated on the seed packet, space seeds as recommended, cover with soil, and water gently. Direct sowing works best for root crops like carrots and parsnips, which dislike being transplanted.
• Plant / Plant Out — This calendar column covers planting sets, cloves or tubers in their final position as well as moving a young plant that was started indoors or bought as a plug plant outside. Follow the linked crop-specific guidance for the method.
• Harvest — Your crop is ready to pick and eat. Harvest times are approximate, so check the crop regularly and pick when it looks and feels ready. Most vegetables taste best when harvested young and tender rather than left to grow enormous. Regular picking also encourages the plant to produce more.

Essential Equipment for Getting Started

You do not need expensive equipment to start growing vegetables. Here is the minimum kit for a beginner:

• Seed trays and small pots — for starting seeds indoors. Recycled yoghurt pots with drainage holes work perfectly.
• Seed compost — finer than multipurpose compost, designed for germination. A 20-litre bag costs around £4 and lasts months.
• A hand trowel and fork — for planting out and weeding. Buy decent ones (£10–15) and they will last decades.
• A watering can with a rose attachment — for gentle watering of seedlings without washing seeds away.
• Plant labels — essential for knowing what you sowed where. Lollipop sticks work as a free alternative.
• Horticultural fleece — for protecting tender plants from late frosts. A 10-metre roll costs about £5 and is reusable for years.
• A soil thermometer — around £5 and invaluable for knowing when the soil is warm enough to sow outdoors.

As you gain experience, you might add a cold frame, a greenhouse, or raised beds. Use our raised bed calculator to work out how much soil and compost you need to fill new beds, or our soil calculator for larger areas.

Common Mistakes to Avoid

These are the mistakes that trip up beginners most often, and they are all easy to avoid once you know about them:

1. Sowing too early. Enthusiasm is great, but seeds sown into cold, waterlogged soil will rot rather than grow. Wait until the soil temperature is right for the crop. The calendar shows the correct months, but let your soil thermometer have the final say.
2. Not hardening off. Seedlings grown on a warm windowsill cannot cope with outdoor conditions overnight. Harden them off gradually over 7–10 days. Skipping this step causes transplant shock, wilting, and often death of the plant.
3. Sowing everything at once. If you sow all your lettuce in one go, you will get 30 lettuces ready on the same day. Sow a short row every 2–3 weeks instead (succession sowing) for a continuous harvest over months.
4. Overcrowding. It is tempting to squeeze in as many plants as possible, but overcrowded crops compete for light, water, and nutrients. They grow poorly, attract disease, and produce smaller harvests. Follow the spacing on the seed packet.
5. Forgetting to water. Young plants and seedlings need consistent moisture. Containers dry out fastest and may need watering twice a day in hot weather. An inconsistent water supply causes bolting in lettuce, blossom end rot in tomatoes, and splitting in carrots.

Where to Buy Seeds & Plants in the UK

Four supplier categories cover most UK home gardeners' needs. A broad seed-collection set is the convenience option: one order and a whole starter garden arrives in a single delivery. B&Q and Wilko stock seasonal seeds in-store, which is the fastest route if you need a packet today. Thompson & Morgan and Mr Fothergill's are the specialists, with 500+ varieties including heritage, F1, and dwarf cultivars not stocked by mass retailers. BBC Gardeners' World magazine is the wildcard pick: each monthly issue carries an exclusive 2-for-1 garden-entry card that pays for the magazine on a single visit, so it doubles as a seasonal-inspiration buy and an annual day-out subsidy.

Specialist suppliers consistently win on germination rate and varietal accuracy in independent tests. Mass retailers win on convenience and price-per-packet. For high-value crops you'll grow for the whole season (tomatoes, sweetcorn, runner beans) the specialist route is worth the extra few quid; for short-cycle salads and radishes where you'll sow a fresh packet every fortnight, the supermarket-aisle option is fine.

Postage thresholds matter: Thompson & Morgan free postage starts at £30, Mr Fothergill's at £25, so pool one large order with a fellow allotmenteer rather than splitting two small ones.

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