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Growing guide

Spring vegetables to plant in the UK

Spring is the busiest sowing season. But “spring” means something different in Devon and something different in Dundee. The key is your local last frost date — enter your postcode to find yours.

Hardy crops — start now

These can go outdoors before your last frost. They tolerate cold nights and light frosts. In most of the UK, you can start sowing these from late February through March.

Broad beans

Pinch out the growing tips once the first pods form to discourage blackfly. They'll also ripen faster.

Peas

Sow every 3 weeks for a continuous harvest. Pick regularly to keep them producing — leave one pod on and the whole plant slows down.

Lettuce

Sow a short row every 2 weeks and you'll never buy a supermarket bag again. Pick outer leaves to keep it going.

Spinach

Bolts the moment it gets hot. Best in spring and autumn. Pick little and often — a whole plant cooks down to about two mouthfuls.

Radishes

The quickest crop you can grow — seed to plate in 4 weeks. Sow between slower crops to use the space while you wait.

Carrots

Sow thinly to avoid thinning — the smell of crushed leaves is a dinner bell for carrot fly. Cover with fleece to be safe.

Beetroot

Each seed cluster produces several seedlings — thin to the strongest. Don't chuck the leaves, they're delicious wilted with butter.

Onion sets

Push sets into the soil with the tip just showing. Easiest way to grow onions — skip seed unless you enjoy waiting.

Potatoes (early)

Chit (sprout) seed potatoes on a windowsill before planting. Earth up as they grow — if you see green skin, it's toxic.

Kale

Gets sweeter after a frost. One of the hardiest crops — can harvest all winter.

Parsnips

Very slow to germinate (2-4 weeks). Use fresh seed every year. Sow radishes alongside to mark the row.

Spring onions

Sow a pinch every few weeks and you'll have spring onions all season. Dead easy — one of the best crops for beginners.

Swiss chard

Beautiful and productive. Pick outer leaves and it keeps going for months. Rainbow chard looks stunning.

Turnips

Harvest when golf-ball sized for the sweetest flavour. Leave them too long and they go woody. Quick-growing gap filler.

Leeks

Drop seedlings into deep holes and just water in — no need to fill the hole. They'll fatten up on their own.

Broccoli

Cut the main head first and you'll get side shoots for weeks. Purple sprouting is the real star — worth the long wait.

Cabbage

Different varieties for each season — spring, summer, autumn, and winter types. Red cabbage is less bothered by caterpillars.

Cauliflower

Fold outer leaves over the curd to keep it white. Cauliflower leaves are delicious too — don't throw them away.

Brussels sprouts

Grow through summer, harvest from autumn through winter. Flavour improves after frost. Start early — they're slow.

Garlic

Plant individual cloves Oct-Nov, pointed end up, 2.5cm deep. Garlic needs a cold period to form bulbs. Harvest when lower leaves yellow.

Parsley

Slow to germinate (3-4 weeks) — don't give up on it. Soak seeds overnight in warm water to speed things up. Flat-leaf has the stronger flavour.

Half-hardy crops — sow indoors now, plant out after frost

These need warmth to germinate but can handle cool (not freezing) conditions once established. Start them on a windowsill or in a heated propagator in March or April, then plant out a couple of weeks after your last frost.

Sweetcorn

Plant in a block, not a row — they're wind-pollinated and need neighbours. Each plant gives you 1-2 cobs, so don't be stingy with numbers.

Courgettes

You only need 2-3 plants. Seriously. Pick them small (15cm) or they turn into marrows overnight.

French beans

Dwarf varieties need no support. Pick every few days — once they start producing, they don't stop (unless you let pods go to seed).

Squash

Big hungry plants — give them space and feed them well. Leave to cure in the sun before storing and they'll keep for months.

Pumpkins

Limit each plant to 2-3 fruits for bigger pumpkins. Sit them on a tile or slate to stop rot from underneath.

Coriander

Bolts at the slightest excuse. Sow every 3-4 weeks, pick frequently, and choose slow-bolt varieties. It's a race you can win if you stay on top of it.

Rocket

Dead easy and fast. Gets spicier in hot weather — which is either a feature or a bug depending on your taste. Pick leaves small for salads.

Pak choi

Sow early spring or after midsummer — it'll bolt faster than you can blink in the heat. Worth it though. Fast-growing and very rewarding.

Fennel

Sow after midsummer for best bulbs — earlier sowings often bolt. Don't transplant bare-root, it hates root disturbance. Use modules.

Celery

Sow seeds on the surface — they need light to germinate. Start early in a propagator. Cutting celery is much easier than trench celery if you're new to it.

Dill

Sow direct — dill absolutely hates being transplanted. Short rows every few weeks for continuous supply. Gets to 90cm, so give it a sheltered spot.

Tender crops — patience pays off

Don't be tempted to sow these too early. They need warm soil and no risk of frost. Sow indoors from late March to April, but don't plant out until well after your last frost date — typically late May in the south, early June in the north.

When exactly should I start?

It depends entirely on where you are. A grower in Penzance can sow outdoors weeks before someone in Inverness. That's why we built this tool — enter your postcode and we'll calculate your frost date and tell you exactly what to sow this week.

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