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 23 products.
 
Delphinium Hybridum Dusky Maiden

Delphinium 'Dusky Maiden'

Long, strong, impressive flower spikes in spectacular dusky pink shades, making this superb as a cut flower. Truly outstanding garden performance makes this a must for all perennial borders. Height: 120-150cm (4-5ft).

 More info
    • 1 packet (8 seeds)

    • Despatch: Within 2 Days
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    • £0.99
Delphinium Grandiflorum Summer Nights

Delphinium grandiflorum 'Summer Nights'

Delphinium chinense

Attractive dwarf plants covered in a blanket of dainty midnight-blue flowers. Flowering in their first year from sowing makes them perfect for bedding borders or containers, providing a colourful display over a long summer period.

 More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
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    • £0.69
Helleborus Purpurascens

Hellebore (Purple-flowered Christmas Rose)

Helleborus purpurascens

Rarely offered for sale as seed! This exquisite Helleborus produces clumps of robust, leathery foliage along with many large blooms, flushed in shades of purple, pink and even slate grey!

 More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
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    • £0.99
Helleborus Niger

Hellebore (Christmas Rose)

Helleborus niger

Surprise your friends and neighbours with an arrangement of Christmas roses for the festive season! Beautiful blooms at a time when little else is available. From seed you can have a group quite close together in a way which would cost you a great deal if you bought the plants. They flower in about three years from seed and invariably produce stronger, healthier plants.

 More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.69
Delphinium X Cultorum Tall Black Knight

Delphinium x cultorum 'Tall Black Knight'

Tall, robust, candle-like flower spikes packing with attractive, deep blue blooms, each complemented by a striking large black bee in the centre. A stunning addition to any border. Height: 120-150cm (4-5ft). More info
    • 1 packet (100 seeds)

    • Despatch: Within 2 Days
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    • £2.79
Chrysanthemum X Koreanum Fanfare Improved F1

Chrysanthemum x koreanum 'Fanfare Improved' F1 Hybrid

Chrysanthemum x grandiflorum, Florist's Chrysanthemum

 The cooler it is the earlier it blooms continuing till hard frost. Double pom-pom, 3in flowers on semi-dwarf plants. Magnificent cut flower. More info
    • 1 packet (40 seeds)

    • Despatch:
    •  
    • £1.49
    • Out of stock
Anemone Japonica Mixed

Anemone japonica (Mixed)

Japanese Anemone, Anemone x hybrida, Windflower

 Elegant, late summer flowering perennials, producing their gorgeous, well shaped blooms mainly in rose to pink shades for many weeks and providing the perfect end to the summer. Happy in sun or light shade. Flowers late summer/autumn, Height: 60cm-1.2m (2-4-ft). More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
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    • £3.69
Helenium Puberleum Autumn Lollipop

Helenium puberulum 'Autumn Lollipop'

Helen's Flower, Rosilla, Helenium puberleum

  Customer Rating

A curious plant for the front of the border. Autumn Lollipop boasts heads of rustic yellow and bronze with a small basal frill of ruffled petals. Highly ornate and also an extremely original cut flower. Height: 60-90cm (24-36in).

 More info
    • 1 packet (80 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.69
Lobelia Cardinalis 'Queen Victoria'

Lobelia cardinalis 'Queen Victoria'

Cardinal Flower, Lobelia fulgens, Lobelia splendens
Tall spikes of deep maroon foliage topped by glowing scarlet blooms bring a welcome splash of late summer colour, when many flowers have already faded. This exotic looking, short lived perennial is ideal for filling gaps in damp borders, and looks spectacular planted beside ponds and streams. Height: 90cm (36”). Spread: 30cm (12”). More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
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    • £2.49
Thalictrum Delavayi

Thalictrum delavayi

Chinese Meadow Rue
This choice plant will grace any border with its shimmering sprays of regal mauve with attractive creamy-yellow stamens. Ideal for cutting. Height: 120-150cm (4-5ft). More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
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    • £1.49
Helenium Autumnale Sunshine Hybrid

Helenium autumnale 'Sunshine Hybrids'

Helen's Flower, Sneezeweed
A dazzling colour range of flowers, making a spectacular autumn display in perennial borders. Height: 60-120cm (2-4ft). More info
    • 1 packet (300 seeds)

    • Despatch: Within 2 Days
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    • £2.19
Delphinium X Cultorum Centurion Rose F1 Hybrid

Delphinium x cultorum 'Centurion Rose' F1 Hybrid

One of the highest quality Delphiniums from seed! Robust flower spikes become clothed in superb mid-rose, triple layered petals, known as duplex flowers, with white bees. Wonderful, adding height and colour to borders, along with impressing the judges on the show bench. Height: 120-150cm (4-5ft). More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.49