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 84 products.
 

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

Commelina dianthifolia

Bird-bill Day Flower, Widow's Tears

 Customer Rating

A very rare plant indeed. This is one of the few plants with such intense blue flowers and that will also perform well in the garden. Flowering in its first year with 2.5cm (1in) gentian blue flowers, it then produces tubers and springs back to life the following year with an unceasing display of blooms. Wonderful in containers, rock gardens and the border (regardless of soil conditions). Hardy down to -8/-10C. Flowers summer. Height 15-30cm (6-12in.)

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    • 1 packet (25 commelina seeds)

    • Despatch: Within 1 days
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    • £0.99

Foxglove 'Apricot'

Digitalis purpurea

 Customer Rating
An outstanding introduction producing large spikes of a lovely shade of Apricot. A most unusual and sought after colour. Excellent for the border in sun or part shade, and very useful as a cut flower. Flowers early summer. Height 1.3-1.5m (4-5ft).
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    • 1 packet (450 foxglove seeds)

    • Despatch: Within 1 days
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    • £0.99

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

Foxglove 'Alba'

Digitalis purpurea f. albiflora, Digitalis purpurea 'Alba'

Marvellous large pure white spikes, a rare and unusual colour. Magnificent in the border in sun or part shade and very useful as a cut flower. Flowers early summer. More info
    • 1 packet (150 foxglove seeds)

    • Despatch: Within 1 days
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    • £2.99

Red Hot Poker 'Traffic Lights'

Kniphofia hirsuta, Torch Lily

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

Saponaria ocymoides

Tumbling Ted, Rock Soapwort

Spreading rockery, or paving plant, myriads of ½in pink flowers.

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    • 1 packet (25 saponaria seeds)

    • Despatch: Within 1 days
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    • £0.99

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.

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    • 1 packet (12 pansy seeds)

    • Despatch: Within 1 days
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    • £0.99

Verbascum x hybrida 'Southern Charm' F1 Hybrid

Mullein, Celsia

 Customer Rating
Thanks to successful breeding we can now have the versatile Verbascum in gorgeous pastel shades. Long spikes bear 1in flowers in shades of apricot, dusky pink, cream and lavender-pink over a long period. Use them for bedding (sown in the previous autumn), herbaceous borders and containers. Do not forget that they make fantastic cut flowers too. Height: 660-120cm (2-4ft).
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    • 1 packet (30 verbascum seeds)

    • Despatch: Within 1 days
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    • £0.99

Foxglove 'Excelsior Hybrid Mixed'

Digitalis purpurea

A most effective and spectacular strain of Foxgloves superb for shady shrub and tree areas, back of borders and excellent for cut flowers. They can really bring the early summer garden alive! Flowers early summer. Height 5ft.
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    • 1 packet (2500 foxglove seeds)

    • Despatch: Within 1 days
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    • £1.99

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

Hesperis matronalis

Sweet Rocket

Charming, large spikes of single, lilac and purple flowers are produced in the spring filling the air with their sweet and spicy evening fragrance. Sweet Rocket will also attract butterflies and other beneficial insects to your garden. Hardy Biennial - can be perennial in some soils.

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

More info
    • 1 packet (500 hesperis seeds)

    • Despatch: Within 1 days
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    • £2.99