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Chillies growing

Photo: Unsplash

Tender — no frost tolerance

When to plant
chillies in the UK

Need heat to germinate — use a propagator or the warmest windowsill you've got. The more sun they get, the hotter the fruit.

24wto harvest
40cmspacing
12°Cmin soil temp
tenderhardiness
Plan it for your plot

Work out your own dates

Starts from the recommended sow date for your area. Sowed on a different day, or planted out late? Adjust below and the harvest moves with it.

Using the UK-average last frost · 15 April · add your postcode to tune it

Sow4 February
Plant out6 Maypredicted
Harvest from22 July

Growing journey

Last frost
Sow indoors10w before frost
Plant out3w after frost
Harvest27w after frost

24 weeks from planting out to harvest · Start indoors 13 weeks before planting out

Get chillies seeds

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What chillies need

Full sun. Warmth. Sheltered or under cover. Perfect for a sunny patio in pots.

Spacing

40cm

40cm between plants

These are larger plants — give them plenty of space for air circulation.

the varieties

Varieties worth growing

Jalapeno

common

The world's most useful chilli. Warm enough to add bite, mild enough not to hospitalise anyone. Thick-walled and perfect for stuffing, slicing, and pickling. Grows well on a sunny UK windowsill and makes you feel like you're getting away with something.

in the kitchen

Pickled jalapenos

Slice into rings, pack into jars with garlic and peppercorns, cover with hot vinegar brine. Ready in a day, perfect in a week. You'll put them on everything.

Jalapeno poppers

Halve, stuff with cream cheese, wrap in bacon, bake until crispy. The heat, the cream, the salt, the crunch. Dangerously good.

Ring of Fire

uncommon

A cayenne type that dries brilliantly — string them up in the kitchen and you've got a year's worth of chilli flakes and an instant rustic aesthetic. Productive, hot without being hostile, and genuinely easy to grow.

in the kitchen

Homemade chilli flakes

String the ripe red chillies on thread, hang in a warm, dry place until completely dried. Crush in a mortar. Your own chilli flakes, infinitely better than the jar, and they'll last all year.

Fiercely hot and distinctly fruity — the chilli behind jerk chicken and Caribbean pepper sauce. Needs warmth to ripen in the UK (a greenhouse or sunny windowsill), but if you get it right, a single plant produces enough to heat-proof your cooking for months.

in the kitchen

Caribbean pepper sauce

Blitz ripe scotch bonnets with mango, garlic, mustard, vinegar, and a pinch of allspice. Fruity, fiery, and a few drops transform rice and peas, grilled chicken, or a morning egg. Wear gloves.

Starts yellow, ripens through orange to red, and the heat is moderate — enough to warm but not to punish. The waxy flesh is thick and perfect for stuffing. An excellent first chilli for cautious growers who don't want to play roulette with their dinner.

in the kitchen

Stuffed hot wax peppers

Halve lengthways, stuff with a mixture of cream cheese, herbs, and a little garlic. Grill until the cheese melts and the pepper softens. Mild enough to eat like a snack, warm enough to know it's a chilli.

Chilliesdrink heavily through summer — a good soak at the roots beats a daily sprinkle. How I water, and the lance I use →

When to sow chillies

Sow indoorsFebruary
Plant outMay

Based on UK average frost date. Enter your postcode for exact dates, or find your city.

Seeds

Where to buy chillies seeds

Links may be affiliate links. We may earn a small commission at no extra cost to you.

Kit

What you'll need for chillies

The stuff beginners wish they'd bought sooner.

Heated propagator (Garland)Amazon

These crops need 24-30°C to germinate — a cold windowsill won't cut it. The difference between success and failure in the UK.

More in our equipment guide →
Tomato feed (Tomorite)Amazon

High-potash liquid feed. Once the first fruits form, feed weekly — it makes a real difference to yield.

Links go to Amazon. We earn a small commission at no extra cost to you.

Get your exact dates

Enter your postcode for personalised planting dates for chillies.

Keep exploring

Other crops to grow

Broad beans

Pinch out the growing tips once the first pods form to discourage blackfly. They

Peas

Sow every 3 weeks for a continuous harvest. Pick regularly to keep them producin

Lettuce

Sow a short row every 2 weeks and you'll never buy a supermarket bag again. Pick

Spinach

Bolts the moment it gets hot. Best in spring and autumn. Pick little and often —

Radishes

The quickest crop you can grow — seed to plate in 4 weeks. Sow between slower cr

Carrots

Sow thinly to avoid thinning — the smell of crushed leaves is a dinner bell for

Beetroot

Each seed cluster produces several seedlings — thin to the strongest. Don't chuc

Onion sets

Push sets into the soil with the tip just showing. Easiest way to grow onions —

Potatoes (maincrop)

Plant a few weeks after earlies. Earth up as haulms grow. Harvest when foliage d

Potatoes (early)

Chit (sprout) seed potatoes on a windowsill before planting. Earth up as they gr

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 alon

Spring onions

Sow a pinch every few weeks and you'll have spring onions all season. Dead easy

Swiss chard

Beautiful and productive. Pick outer leaves and it keeps going for months. Rainb

Turnips

Harvest when golf-ball sized for the sweetest flavour. Leave them too long and t

Leeks

Drop seedlings into deep holes and just water in — no need to fill the hole. The

Broccoli

Cut the main head first and you'll get side shoots for weeks. Purple sprouting i

Cabbage

Different varieties for each season — spring, summer, autumn, and winter types.

Cauliflower

Fold outer leaves over the curd to keep it white. Cauliflower leaves are delicio

Brussels sprouts

Grow through summer, harvest from autumn through winter. Flavour improves after

Garlic

Plant individual cloves Oct-Nov, pointed end up, 2.5cm deep. Garlic needs a cold

Parsley

Slow to germinate (3-4 weeks) — don't give up on it. Soak seeds overnight in war

Sweetcorn

Plant in a block, not a row — they're wind-pollinated and need neighbours. Each

Courgettes

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

French beans

Dwarf varieties need no support. Pick every few days — once they start producing

Squash

Big hungry plants — give them space and feed them well. Leave to cure in the sun

Pumpkins

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

Coriander

Bolts at the slightest excuse. Sow every 3-4 weeks, pick frequently, and choose

Rocket

Dead easy and fast. Gets spicier in hot weather — which is either a feature or a

Pak choi

Sow early spring or after midsummer — it'll bolt faster than you can blink in th

Fennel

Sow after midsummer for best bulbs — earlier sowings often bolt. Don't transplan

Celery

Sow seeds on the surface — they need light to germinate. Start early in a propag

Dill

Sow direct — dill absolutely hates being transplanted. Short rows every few week

Strawberries

Plant runners in spring or late summer and you will be picking fruit the followi

Raspberries

Plant bare-root canes in winter for the cheapest option. Summer varieties fruit

Blackberries

Cultivated blackberries produce bigger, sweeter fruit than wild ones and are tho

Gooseberries

One of the easiest fruit bushes for UK allotments. Plant a bare-root bush in win

Blackcurrants

Blackcurrants are packed with vitamin C and make the best jam and cordial. Plant

Redcurrants

Beautiful jewel-like berries that hang in trusses. They tolerate more shade than

Rhubarb

Plant a crown in winter, do not harvest the first year, and it will reward you w