Crops › Sweetcorn
How to grow Sweetcorn
in the UK
Sow April to May, plant out June to July, harvest August to October. About 100 days from seed to plate.
Sweetcorn, what a treat! There's nothing quite like biting into a cob picked fresh from your own plot, sweet and juicy. It's a bit of a space hog, to be honest, but well worth the effort for that proper taste of summer.
Sowing
You can get started with sweetcorn in a couple of ways. Best bet for us up North is to sow indoors in April, about 2-3 cm deep, in modules or small pots. Pop them on a warm windowsill or in the greenhouse. Down south, you might get away with direct sowing outdoors in May once the chance of frost has well and truly passed, but even then, a bit of warmth inside gives them a proper head start. Plug plants are often available too if you're short on time.
Growing on
Once your seedlings have a few true leaves, they'll need pricking out if they're too close. Before planting them out on the plot, you'll want to harden them off for a week or so, just to get them used to the outdoors. Do this after the last frost, usually mid to late May up here. Plant them in a block, not a long row, about 45cm apart each way. This helps with wind pollination, you know what I mean. Find them a warm, sheltered spot.
Looking after it
Sweetcorn needs a good drink, especially as those cobs start to swell. Keep them watered regularly, particularly in dry spells. A bit of general purpose feed won't go amiss either, just to give them a boost. Some folks grow them with squash or beans, like a 'three sisters' planting; it can work well, providing some shade and nitrogen for the sweetcorn.
What goes wrong
Slugs are always a problem for young sweetcorn plants, so keep an eye out when they're small. Once they're bigger, mice and badgers can take a fancy to the ripening cobs. If you've got badgers, you might need some proper netting or fencing, to be honest. Check the plants regularly for any signs of trouble.
Harvest
Sweetcorn is usually ready about 100 days after sowing, so August onwards up here. You'll know it's ready when the tassels turn dark brown and you can feel the cobs are plump. Peel back a bit of the husk and press a kernel with your thumbnail; if a milky liquid comes out, it's ready. Twist the cob off the stalk. Best eaten straight away for that cracking flavour, but it freezes well if you blanch it first.
I always try to plant a few extra, because those slugs can be proper determined when the plants are just getting going. Better to have too many than not enough, eh?
Dates for your plot
Type the first half of your postcode and the plant-out advice shifts to your area's typical frost dates.
Varieties, and whether the club would grow them again
| Variety | Club verdict |
|---|---|
| Swift F1 This one's a cracker for getting an early crop, even if our summers aren't always scorching. It's really reliable and sets good cobs in cooler conditions. | No club votes yet |
| Incredible F1 A proper supersweet variety that lives up to its name, giving you lovely big cobs. Great if you want that classic sweetcorn flavour and a good harvest. | No club votes yet |
| Lark F1 If you're keen for an early taste of summer, Lark is a super choice with its very sweet kernels. It crops nice and early, which is always a bonus up North. | No club votes yet |
| Sundance F1 This maincrop variety is known for being dependable, doing well in our unpredictable UK weather. You'll get some decent, large cobs from these vigorous plants. | No club votes yet |
| Earlibird F1 As the name suggests, Earlibird is one of the quickest sweetcorn to mature, letting you harvest sooner. Perfect for those who can't wait to get their hands on fresh cobs. | No club votes yet |
| Sweetie Pie F1 This one's a real winner for taste, offering super tender and incredibly sweet kernels. It's a proper treat straight off the cob. | No club votes yet |
| Mirai Picnic F1 A gourmet choice from Japan, Mirai Picnic offers an exceptional sweetness that's hard to beat. If you're looking for something a bit special, this is it. | No club votes yet |
| Tyson F1 Tyson is a robust variety that's happy to be sown direct outdoors, making it a bit less faff. It grows into strong, vigorous plants that produce well. | No club votes yet |
| Golden Bantam This is a proper heritage variety, giving you that rich, old-fashioned sweetcorn flavour from open-pollinated plants. It's a cracking choice for those who appreciate tradition and taste. | No club votes yet |
| Minipop F1 If you fancy trying baby corn, Minipop is the one to go for, picked young for stir fries. It's a bit different and adds a lovely crunch to your cooking. | No club votes yet |
| Double Standard This heritage variety gives you lovely bicolour kernels, yellow and white, which look cracking on the plate. It's sweet and tender, offering a real classic taste. | No club votes yet |
| Butterscotch F1 Butterscotch offers a delightful sweet flavour with a hint of butteriness, making it a gourmet choice. These are vigorous plants that grow well and produce good cobs. | No club votes yet |
Votes are members rating varieties in their Seed Tin, one vote per gardener. Tap a variety for the full page and where to buy.
Buy Sweetcorn seeds
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Cook the harvest
A deeply comforting bowl that lets the sweetness of fresh corn cut through the smoky, savoury depth of haddock. This is the kind of chowder that makes you glad you grew your own — the corn is thick-cut from the cob and holds its texture beautifully in the broth. Serve with crusty bread and eat it while it's still steaming.
50 min · mediumSweetcorn cobs are charred directly over the flame or under a hot grill until deeply golden, then the kernels are stripped and simmered with black beans and smoky paprika. It is a bold, satisfying soup that tastes like summer even on the first cool evening of autumn. Serve with thick crusty bread and you have a proper meal.
45 min · mediumFresh sweetcorn is cooked directly into the rice so the kernels release their sweet starchy milk into every grain as it steams. Finished with cold butter and showered with golden crispy shallots, this is one of those side dishes that quietly steals the show. It works beautifully alongside grilled chicken, fish, or simply on its own with a fried egg on top.
30 min · easyThis is a bold, sunshine salad that earns its keep as a main course in warm weather or as a substantial side through September. Sweetcorn cobs are grilled until charred and nutty, then the kernels are tossed with smoky roasted peppers, thin shards of Manchego, toasted flaked almonds and a punchy sherry vinegar dressing. It is the kind of salad you actually want to eat.
27 min · easyWatch for, and grow alongside
Companions: squash, beans, courgettes
Questions people ask
When do you sow Sweetcorn in the UK?
Sow Sweetcorn from April to May. Plant out June to July, after the last frost.
How long does Sweetcorn take from sowing to harvest?
Roughly 100 days, with the harvest August to October.
Which Sweetcorn varieties do gardeners grow again?
Club members rate every variety they grow. This page shows the grow-again votes for Swift F1, Incredible F1, Lark F1, Sundance F1 and more.
Track your Sweetcorn from packet to plate
Sowing reminders and harvest forecasts for your own frost dates, the Seed Tin, Scan Centre for any label or packet, and the Potty Mouth Garden Club. Free to start.
Allotment keeper in the North East of England, the voice behind the Tony C Smith YouTube channel, and the gardener who built GrowMore CookMore. Club numbers on this page update as members log their plots. Last updated 3 September 2026.