Thompson & Morgan

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Sweetcorn 'Lark' F1 Hybrid (Tendersweet)

Zea mays

Half-hardy Annual

 Customer Rating

Sweetcorn 'Lark' is a midseason tendersweet variety giving superior sweetness with a softer, less chewy texture than conventional supersweets. The large cobs, packed with golden, thin-skinned kernels, are delicious picked fresh from the garden and boiled, steamed or barbecued. Many varieties of Sweetcorn need to be grown in isolation. This variety has the benefit of being able to be grown alongside other varieties. Improved germination adds to the appeal of the RHS Vegetable Collection variety.Height: 200cm (79"). Spread: 45cm (18").

Ideal For:
kitchen garden
Flowering Period:
July, August
Sowing Months:
April, May
full sun
    • 1 packet (30 sweetcorn seeds)

    • Despatch: Within 1 days
    • £2.99

Start off in 7.5cm (3") pots indoors and plant out in your vegetable plot. Fill pots with good, free-draining, damp, seed compost. Sow seeds 4cm (1 1/2") deep in the compost. Place the pots in a propagator or seal inside a polythene bag and keep at around 18-20C (64-68F) until the seeds germinate. This will take about 7-10 days. Don't exclude light as this helps germination.

Before planting out, prepare the ground by raking until it is fine and crumbly, removing any large stones. Acclimatise the plants to cooler conditions by putting them outside for a few hours a day for a few weeks. Plant out when all risk of frost has gone about 45cm (18") apart between each plant and between each row.

Water sweetcorn plants regularly until established, particularly during dry periods. Provide a thick mulch of organic matter around the base of the plants to help conserve moisture and reduce weed growth. Sweetcorn plants are shallow rooted so take care when hoeing to prevent root damage. Harvest sweetcorn cobs when the silky tassles at the end of the cob have turned brown. Peel back the sheath of the cob slightly and press the corn kernels with a fingernail until liquid squeezes out. If liquid is milky coloured then the cob is ripe, if clear then it is under-ripe.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.

Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

  1. Lovely corn, hard to beat and Which? liked it too.

    By Ellen Kunec 09-07-2011

    Grew this last year and the cobs were lovely. Decided to have a go with Lapwing this year but have still grown some Lark. Unless you are in the South, start them off in May in the airing cupboard in roottrainers or similar then plant out end May in blocks about 25 cm between plants. Lots of water and plant food and you will get fabulous corn. Blanch before freezing and eat the last over Chirstmas - lovely. Which? also liked the Mirai varieties which I may try next year but I'll still be growing Lark as the postive control. The Hurst Greenshaft of corn. Happy days.

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