Thompson & Morgan

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Perennial & Biennial Seeds

Biennials live for 2 years, whereas perennials live for longer. As a general rule, biennial and perennial seeds should be sown in spring, but some can be sown in autumn as well. Many varieties will self-seed after flowering, giving you even more plants!

We have found 4 products.

Sunflower x laetiflorus

Helianthus x laetiflorus, Perennial Sunflower, Showy Sunflower

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A true perennial Sunflower adding height and colour to perennial borders, flowering in their first year. Stunning bright yellow 10-12cm (4-5in) diameter blooms with deep yellow centres, will brighten your garden over a long period attracting birds and butterflies. Height: 150-180cm (5-6ft).

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

Useful links:

Companion Planting


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.

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    • 1 packet (25 sunflower seeds)

    • Despatch: Within 1 days
    • £2.99

Cynara cardunculus


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The ripening seed heads of Cynara cardunculus are a fantastic combination of bronzes and golds. The stems are thick and sturdy, the foliage is large, serrated and silver and in its own right presents an imposing border plant for most of the year.
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    • 1 packet (18 cynara seeds)

    • Despatch: Within 1 days
    • £0.99

Tropaeolum speciosum

Flame Nasturtium, Flame Flower, Flame Creeper

Flame Flower. Gorgeous scarlet flowered climber. Climbs to 180-300cm (6-10ft).
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    • 1 packet (10 tropaeolum speciosum seeds)

    • Despatch: Within 1 days
    • £4.99

Desmodium 'The Dancing Plant'

Desmodium gyrans (syn. Codariocalyx motorius), Telegraph Plant, Semaphore Plant

  • Amazing dancing plant
  • Moves to sound and light!
  • Foliage plant with real wow factor
This plant needs to be seen to be believed! Forget those tacky dancing flowers from the 1980s, now you can grow your own dancing windowsill plant. Desmodium is one of the few plants capable of rapid movement, and has enraptured plant hunters and naturalists for centuries. Charles Darwin, good friend of our company founder William Thompson, was enthralled by this Asian shrub, writing about it at length in his 1880 book ‘The Power of Movement in Plants’. Each large leaf moves to maximise exposure to sunlight, but to conserve its energy, a pair of smaller leaflets at the base of each leaf are constantly on the move in the search for sunlight. Cleverly, the information gathered by these leaflets is then used to move the larger leaves as required! Come dark of night the leaves droop to rest until sun up. Even more astoundingly, and still unexplained by science, the foliage will also respond to certain sounds, especially high-pitched notes. Try it for yourself, play your plants some different genres - we’d love to hear if they show a preference for rock, classical or pop! Height and Spread: 120cm (59")
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    • 1 packet (10 desmodium seeds)

    • Despatch: Within 1 days
    • £3.99