Thompson & Morgan

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Sunflower 'Russian Giant'

Helianthus annuus

Hardy Annual

 Customer Rating
A giant among annuals. Give them plenty of room and you will be rewarded with plants up to 3m (10ft) tall with huge yellow flowers often 30cm(12in) in diameter. Useful to grow against an unsightly shed or fence. Birds love the seeds so grow a few plants close to the house and watch them feed in the autumn. Flowers summer. Height 8-10ft.

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.

Useful links:

Companion Planting

Ideal For:
cottage gardens, wildlife gardens, cut flower garden
Flowering Period:
July, August, September
Sowing Months:
March, April, May
full sun
    • 1 packet (60 sunflower seeds)

    • Despatch: Within 1 days
    • £1.99
Sow early spring to early summer outdoors where they are to flower. Prepare the ground well and rake to a fine tilth before sowing. Sow 12mm (0.5in) deep in rows 45cm (18in) apart.For really giant sunflowers, sow them indoors in late winter/early spring, individually in 7.5cm (3in) pots at a temperature of 15-18C (60-65F). Grow on in good light conditions, harden off and plant out when all risk of frost has passed.

They prefer a sunny open site but will grow in most sites and soils.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above.

Despatch: Within 24 hours applies to orders placed online from Sunday to Thursday. Orders placed online on Friday or Saturday will be despatched on Monday. Please note that for Bank Holiday weekends, orders placed Friday to Sunday will be despatched on Tuesday.

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. Russian Giant sunflower only 30in tall

    By Michael Pictor 21-08-2016

    Don't know if I used to small a pot initially but though planted out in two gardens they only grew to a maximum of 30 inches. It made judging the winner of the family competition a humorous affair


    Thank you for your review. I am very sorry to learn of your disappointment with your purchase. At your earliest convenience please contact our Customer Care Department at, one of our agents will be more than happy to look into this further for you.

  2. russian sunflowers

    By mo tidswell 19-02-2016

    vg used in my gardens in clapham ,grew from seed to massive vip


    Thank you very much for your review. I am very pleased that you have been so happy with your purchase and thank you so much for taking the time to let us know. I hope we can continue to be of service to you in the future.

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