Skip to main content
Cucumbers growing

Photo: Unsplash

Tender — no frost tolerance

When to plant
cucumbers in the UK

Outdoor varieties are tougher and easier than greenhouse ones. Keep picking and they keep producing — ignore them and they swell to marrow size.

10wto harvest
45cmspacing
12°Cmin soil temp
tenderhardiness

Growing journey

Last frost
Sow indoors5w before frost
Plant out3w after frost
Harvest13w after frost

10 weeks from planting out to harvest · Start indoors 8 weeks before planting out

Get cucumbers seeds

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

What cucumbers need

Sun. Shelter. Rich moist soil. A frame or trellis saves space.

Spacing

45cm

45cm between plants

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

Varieties

Varieties to try

Marketmore

Outdoor variety, reliable and prolific

Crystal Lemon

Round yellow cukes — fun and different

Telegraph

Long greenhouse classic

Good companions

When to sow cucumbers

Sow indoorsMarchApril
Plant outMay

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

Get reminders about cucumbers

We’ll send you what to sow each month, personalised to your frost date. No spam, unsubscribe anytime.

Seeds

Where to buy cucumbers seeds

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

Kit

What you'll need for cucumbers

The stuff beginners wish they'd bought sooner.

Bamboo canes (6ft)Amazon

For support, staking, and building frames. The most versatile length for the plot.

More in our equipment guide →
Jute twineAmazon

For tying plants to canes and a hundred other jobs. Biodegradable, won't cut into stems.

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 cucumbers.

Keep exploring

Other crops to grow

Illustration of Broad beans
Broad beans

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

Illustration of Peas
Peas

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

Illustration of Lettuce
Lettuce

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

Illustration of Spinach
Spinach

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

Illustration of Radishes
Radishes

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

Illustration of Carrots
Carrots

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

Illustration of Beetroot
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

Illustration of Kale
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