Sunflower 'Key Lime Pie' - Kew Collection SeedsHelianthus debilis

Hardy Annual

What is Hardy Annual?
A plant that completes its entire life cycle (growth, reproduction, death) in one season.
Capable of withstanding outdoor winter temperatures down to -15C.


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These packets are produced in association with Kew Gardens

Attractive clusters of small flowers

Looks great in borders or as a cut flower

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Height Up to 140cm (55.1in)
Spread Up to 45cm (17.7in)

Hardy Annual

cottage gardenswildlife gardenscut flower garden

Full sun

Sowing Months Flowering Months

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Thompson & Morgan is delighted to work alongside the Royal Botanic Gardens, Kew to offer special seed collections to home gardeners. The Kew Collection and The Kew Urban Garden Collection have been specially selected by The Royal Botanic Gardens, Kew.

Attractive clusters of small flowers each with primrose-cream petals, surrounding an unusual lime-green centre disk. En-masse, this mouthwatering combination looks great in borders or as a cut flower.

Culinary note: Some parts of these flowers are edible. Try toasting the seed kernels for a healthy snack. For more details about edible flowers click here.

Companion planting: Try growing sunflowers with chives to deter aphids.

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1 packet (30 sunflower seeds) (31970)

Sow thinly, 12mm (0.5in) deep in drills 30cm (12in) apart in well cultivated soil raked to a fine tilth. Germination usually takes around 10-21 days.

When large enough to handle, thin seedlings to 30cm (12in) apart. Alternatively you can sow indoors in late winter/early spring for earlier flowering. Sow individually into 7.5cm (3in) pots at 20-30C (68-86F). When well grown, gradually acclimatise to outdoor conditions before planting out after all risk of frost.


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 or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

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Sunflower 'Key Lime Pie' - Kew Collection Seeds

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