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 136 products.
 

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.

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    • 1 packet (100 verbascum seeds)

    • Despatch: Within 1 days
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    • £0.99

Echinacea purpurea 'Double Decker'

Coneflower

A very unusual purple-red flowered variety that produces predominantly single flowers in the first growing season, followed by a high percentage of these visually stunning 'twin' flowers in the second season, with the chance that some may even be fully double. These intriguing flowers grace tall, strong stems and make superb long lasting border perennials, attracting many beneficial insects to your garden.
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    • 1 packet (20 echinacea seeds)

    • Despatch: Within 1 days
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    • £0.99

Centranthus 'Star Ruber Mixed'

Valerian, Red Valerian, Pretty Betsy

A beautiful border plant beloved by bees and butterflies. Mixture contains three colours: rose, white and maroon. Plants are lightly fragrant, long flowering and may also be used as a cut flower.
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    • 1 packet (100 centrantus seeds)

    • Despatch: Within 1 days
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    • £0.99

Red Hot Poker 'Traffic Lights'

Kniphofia hirsuta, Torch Lily

 Customer Rating
An intriguing dwarf red hot poker with unusual red, amber and green flower spikes. First year flowering, adding interest to borders and containers. Height: 30-40cm (12-16in). *Sow Sept/Oct to flower the following season.
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    • 1 packet (20 red hot poker seeds)

    • Despatch: Within 1 days
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    • £0.99

Echium pininana

Tower of Jewels, Giant Viper's Bugloss, Tree Echium, Echium pinnifolium

 Customer Rating

No wonder this is also called Tower of Jewels or 'Pride of Tenerife! Exceptionally tall flower spikes packed with either rose or purple-blue flowers, interspersed with silver-green lanceolate leaves.

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    • 1 packet (25 echium seeds)

    • Despatch: Within 1 days
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    • £3.99

Geranium bohemicum 'Orchid Blue'

Hardy Geranium, Cranesbill

Geranium 'Orchid Blue' is a selection by Thompson & Morgan from the species Geranium bohemicum. A short-lived border and ground cover plant which self-seeds to keep continuity. Masses of 2cm (¾in.) flowers of orchid-blue, veined in purple-violet, borne on bushy plants. Makes a delightful show, particularly when situated in a sunny position in the border. Flowers summer. Height 30-45cm (12-18in).

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    • 1 packet (8 geranium seeds)

    • Despatch: Within 1 days
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    • £3.49 £0.99

Echinacea 'PowWow Wild Berry'

Coneflower

With outstanding garden performance and the capacity to produce more flowers per plant than any other seed-raised Coneflower, Echinacea 'PowWow Wild Berry' is a striking addition to any garden. Whether grown as a first-year flowering or as a traditional over-wintered perennial, its unique and intense deep-pink flowers with their dark rose centres will invigorate borders and pots with their vivid colour. Coneflower plants are particularly useful for exposed coastal sites and wildlife gardens. Height: 60cm (24"). Spread: 45cm (18").
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    • 1 packet (10 echinacea seeds)

    • Despatch: Within 1 days
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    • £3.99

Sedum 'Rock Garden Mixed'

Sedum rupestre, Sedum spathulifolium, Sedum album, Sedum aizoon, Sedum reflexum, Stone Orpine, Reflexed Stonecrop, Spoon-leaved Stonecrop, White Stonecrop

Harvest permitting includes: S. reflexion, S. spathulifolium, S. album hybrids, S. aizoon and many others in full foliage and flowering colour range.

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    • 1 packet (300 sedum seeds)

    • Despatch: Within 1 days
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    • £0.99

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).
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    • 1 packet (50 knautia macedonica seeds)

    • Despatch: Within 1 days
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    • £3.99

Salvia patens

Gentian Sage

A classic border plant, ideal for adding a cool blue drift to your planting schemes. The attractive, large blue hooded florets are borne on erect stems above toothed foliage. First year flowering, blooms throughout the summer into autumn. Height: 45-60cm (18-24in).
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    • 1 packet (15 salvia seeds)

    • Despatch: Within 1 days
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    • £0.99

Catananche caerulea 'Bicolor'

Blue Cupidone, Cupid's Dart

 Customer Rating

This first-year flowering hardy perennial is the rarer white form of the blue Cupid's Dart. White semi-double star-like flowers, occasionally flecked with blue, 5cm (2in), stand upon long wiry stems held well above the neat grey green foliage. Together with the silvery buds, this plant makes an eye-catching cut flower, or border plant. Height: 60-90cm (24-36in).

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    • 1 packet (75 catananche seeds)

    • Despatch: Within 1 days
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    • £0.99

Erigeron karvinskianus 'Profusion'

Erigeron karvinskianus, Fleabane, Mexican Fleabane

Lovely subject for hanging baskets, window boxes, patio tubs. Flowers within 3 months.
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    • 1 packet (200 erigeron seeds)

    • Despatch: Within 1 days
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    • £3.49