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 83 products.
 

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.)

More info
    • 1 packet (25 commelina seeds)

    • Despatch: Within 1 days
    •  
    • £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: By end of July 2015
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    • £0.99

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.

More info
    • 1 packet (25 saponaria seeds)

    • Despatch: Within 1 days
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    • £0.69

Hellebore 'Washfield Doubles'

Helleborus x hybridus

Breathtaking, double-flowered Hellebores from the Washfield collection, bred to perfection, adding sheer delight to your borders early each year. T&M are proud to continue the breeding work started over 20 years ago by Hellebore specialist Elizabeth Strangman, and want to share her passion for these intriguing plants with you. These delightful doubles are in a wide colour range including yellows, greens, blacks, reds, apricots and much more. Height: 45-60cm (18-24in).

Please note that stock of this item will be available from June 2012.
More info
    • 1 packet (10 hellebore seeds)

    • Despatch: By end of May 2016
    •  
    • £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).
More info
    • 1 packet (30 verbascum seeds)

    • Despatch: Within 1 days
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    • £0.99

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).
More info
    • 1 packet (15 salvia 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.
More info
    • 1 packet (100 centrantus seeds)

    • Despatch: Within 1 days
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    • £0.99

Silene laciniata 'Jack Flash'

Catchfly, Campion

Wow! What a stunning perennial! Easy to grow and sure to catch some admiring glances. Attractive bright red, starburst blooms borne on slender stems. Goes on flowering over a very long period.
More info
    • 1 packet (15 silene seeds)

    • Despatch: By end of July 2015
    •  
    • £2.99

Aconitum carmichaelii

Monkshood, Wolf's Bane, Aconitum fischeri

An imposing long flowering, long lived perennial with pyramids of beautiful 2 inch flowers. Aconitum is an excellent border plant easily grown from seed. Rich blue flower spikes add a unique colour to the garden, held aloft delphinium-like foliage. Aconitum spikes also last as a cut flower.
More info
    • 1 packet (50 aconitum seeds)

    • Despatch: Within 1 days
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    • £0.99

Astrantia major

Hattie's Pincushion, Masterwort

Silver to rose cushions of flowers, surrounded by a stiff ruff of ray-like bracts of a similar hue. Excellent colour foil. Very long lasting when cut. Height: 60-90cm (24-36in)
More info
    • 1 packet (30 astrantia seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Verbena bonariensis

Glandularia, Verbena patagonica

Tall heads of bright, eye-catching rosy lavender, adding a tranquil tropical feel to borders. Height: 120-150cm (4-5ft).
More info
    • 1 packet (200 seeds)

    • Despatch: By end of July 2015
    •  
    • £2.99