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 87 products.
 
Aubrieta T&M Mixed Hybrids

Aubrieta 'T&M Mixed Hybrids'

Aubretia
A very special selection of large-flowered Aubretia with a rich colour range. They cascade and spread with vigorous determination. Suitable for rockeries, borders, edging paths, planters etc. Flowers early spring. Spread 18-24in. More info
    • 1 packet (400 seeds)

    • Despatch: Within 2 Days
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    • £1.99
Aquilegia Sweet Rainbows

Aquilegia 'Sweet Rainbows'

Columbine, Granny's Bonnet
A breeding breakthrough! The result of merging a full range of top quality Aquileglas, all selected for form, colour and the best fragrance. Ideal for adding sweet scentsation to any border. More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Verbascum Hybrida Snow Maiden

Verbascum x hybrida 'Snow Maiden'

Mullein, Celsia

  Customer Rating

A first class garden plant! Well branched, erect spikes covered in large 4cm (1½in) pure white flowers, over a long period. An incredibly beautiful plant for the back of borders, seldom requiring support.

 More info
    • 1 packet (100 seeds)

    • Despatch: Within 2 Days
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    • £3.29
Centranthus Ruber Snowcloud

Centranthus ruber 'Snowcloud'

Valerian, Red Valerian, Pretty Betsy
Attractive pure white selection. Ideal for attracting beneficial insects into the garden. Very long flowering and can be used as a cut flower. More info
    • 1 packet (70 seeds)

    • Despatch: Within 2 Days
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    • £1.49
Knautia Macedonia

Knautia macedonica

Macedonian Scabious, Scabiosa rumelica
 Customer Rating
One of the finest perennials for the border we have seen. It has a very long season of flowering lasting well into the autumn and early winter. The dense, double, pin cushion scabious like flowers are a brilliantly strong cherry red, a rare colour in border flowers. Makes a large, neat, rounded bushy plant producing many flowers which are excellent for cutting. Easy to grow and undemanding. Flowers summer/autumn. Height 90-120cm (3-4ft). More info
    • 1 packet (50 seeds)

    • Despatch: Within 2 Days
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    • £3.79
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
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    • £0.69
Penstemon X Hybrida Lilac Frost

Penstemon x hybrida 'Lilac Frost'

Beard Tongue
Probably the most winter-hardy, resilient Penstemon we have ever found! Bushy mounds of deep green foliage are enhanced by unusual frosty white, bicoloured blooms. Flowers throughout the summer in borders or large containers. More info
    • 1 packet (50 seeds)

    • Despatch: Within 2 Days
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    • £2.59
Gaillardia Anisata Arizona Sun

Gaillardia aristata 'Arizona Sun'

Blanket Flower
Extremely dwarf, compact mound-forming plants become a mass of radiant red and gold large, daisy-like flowers throughout the summer. Flowers very quickly from seed, so makes a useful addition to perennial borders, or will add interest to bedding displays and containers. More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
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    • £2.89
Meconopsis Betonicifolia

Meconopsis betonicifolia

Himalayan Blue Poppy, Tibetan Blue Poppy
 Customer Rating
Is there a more beautiful bloom in the entire flower kingdom then the famous Blue Poppy? It is only to be expected that an elusive, magical flower like this is a little harder to grow. The secret with this plant is to grow cool and well shaded. Height: 60-90cm (24-36in). More info
    • 1 packet (50 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Francoa Sonchifolia Pink Giant

Francoa sonchifolia 'Pink Giant'

Bridal Wreath

Reliable garden perennial with deeply lobed green leaves and spikes of large pink bicoloured petals on long flower spikes. Just as lovely in a border as in a vase.

 More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Pansy 'Plentifall Mixed' F1 Hybrid

Pansy 'Plentifall Mixed' F1 Hybrid

Viola x wittrockiana

 This new and exciting, large flowered winter pansy has been bred to have a true trailing habit. The branching stems of Pansy ‘Plentifall’ bear masses of fragrant, colourful blooms that hold up better than larger-flowered types in rain and bad weather. Fill your hanging baskets with colour from autumn right through the coldest months of winter. Trails to: 45cm (18”).

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

 More info
    • 1 packet (12 seeds)

    • Despatch: Within 2 Days
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    • £3.29
Eryngium Alpinum Blue Lace

Eryngium alpinum 'Blue Lace'

Sea Holly, Alpine Eryngo
A spectacular alpinum selection with impressive long lasting clear violet-blue terminal flower heads on stunning blue stems. Makes an eye-catching addition to any border, and an attractive cut flower. Height: 85cm (34in). More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
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    • £2.79