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 24 products.
 

Cerastium tomentosum

Snow-in-summer

 Customer Rating

A low spreading rock plant with silvery leaves, topped by pure white flowers. Easy and attractive, particularly useful for quickly covering sunny banks etc. Each plant having a spread of 60cm (24in). Flowers late spring/summer.

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    • 1 packet (320 cerastium seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Lysimachia atropurpurea

Loosestrife

A superb border plant with silver- green lanceolate foliage and many spikes of claret-red, almost black florets - a highly unusual colour in perennials. May also be used in containers or as a cut flower.
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    • 1 packet (40 lysimachia seeds)

    • Despatch: Within 1 days
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    • £3.69

Dianthus caryophyllus 'Trailing Carnations Mixed'

Wild Carnation

Travelling in the Alpine regions of Europe one is struck by the magnificent and visual impact of their window boxes, hanging baskets, pots, tubs etc. And then we realised that they make liberal use of pendulous carnations adding an extra slant in perspective and design. The colour range is mainly pink and red shades.

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

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    • 1 packet (100 dianthus 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

Lysimachia ephemerum

Loosestrife

Probably one of the best species with silver lanceolate foliage and stems. The flower spikes contain many small white flowers, gently veined in mauve. A choice perennial from Spain, and an unusual cut flower too. Height: 60-120cm (3-4ft). More info
    • 1 packet (50 lysimachia seeds)

    • Despatch: Within 1 days
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    • £1.49 £0.99

Cynara cardunculus

Cardoon

 Customer Rating
The ripening seed heads of Cynara cardunculus are a fantastic combination of bronzes and golds. The stems are thick and sturdy, the foliage is large, serrated and silver and in its own right presents an imposing border plant for most of the year.
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    • 1 packet (18 cynara seeds)

    • Despatch: Within 1 days
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    • £0.99

Eryngium giganteum 'Miss Willmott's Ghost'

Eryngium giganteum, Sea Holly

A highly ornate border plant with heart-shaped basal foliage from which rise stems of many decorative steel-blue cones surrounded by a collar of prickly, scalloped leaves. During the summer the foliage transforms from mid green to silvery-grey. Wonderful for dried arrangements, especially at Christmas. Plants can be short lived but often self seed before dying. Height: 90-100cm (36-40in).
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    • 1 packet (30 eryngium seeds)

    • Despatch: Within 1 days
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    • £2.49

Verbascum x hybrida 'Copper Rose' F1 Hybrid

Mullein, Celsia

The robust plants are actually incapable of setting viable seed, so we must offer seed which has been pollinated meticulously by hand between the two parent plants. As with most F1 Hybrids, special factors are tremendous vigour and a plant that just keeps on flowering, as it tries to produce seed which it cannot do. The gorgeous silky, large blooms will smother the soft, silver stems which reach up to 3ft. A great range of fashionable and delicious colours - ranging from copper to buff, apricot, old rose, tan and other lovely blends, all bursting from the contrasting silvery-grey flower spikes and buds. Sown in January/February they will easily flower during the summer of their first year, and if cut back will often re-bloom. An excellent performer. More info
    • 1 packet (10 verbascum seeds)

    • Despatch: Within 1 days
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    • £5.99

Helianthemum Collection

Rock Rose, Sun Rose

Showy dwarf evergreen shrubs which spread quickly over rocks and slopes and make ideal ground cover. The attractive foliage is smothered from late spring with masses of 2.5cm (1 inch) flowers resembling wild roses in pink, lemon, copper, red, purple and white. They love the sun and stand hot, dry conditions very well. Height: 9-12 inches.
More info
    • 1 packet (250 helianthemum seeds)

    • Despatch: By end of May 2016
    •  
    • £2.19 £0.99

Dianthus plumarius 'Ipswich Pinks Mixed'

Carnation, Pink

Ipswich Pinks were made famous by Joseph Sangster, the breeder and proprietor of T&M from 1913-52. They create a solid mass of colour in pinks, reds, bicolours and white, above blue foliage that is close and tightly knit. Ground smothering weed suppressors, they remain evergreen (blue). Floriferous and fragrant, they are welcome cut flowers and a necessity for the cottage garden, border or rock garden, being also suitable for edging or walls. A hardy perennial, they grow to a height of 23cm (9in) and can spread 60-70cm (24-30in). Flowering extends from late spring till the end of summer.

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 1 packet (75 dianthus seeds)

    • Despatch: Within 1 days
    •  
    • £1.49 £0.99

Agastache foeniculum

Anise Hyssop, Agastache anisata, Agastache anethiodora

Silvery-green foliage which is scented unmistakenly of Aniseed. Flower spikes of blue appear during summer. Bees, butterflies and goldfinches love it!

Culinary note: Add both flowers and leaves to cakes or whipping cream for a hint of anise flavour. For more details about edible flowers click here.

More info
    • 1 packet (60 agastache seeds)

    • Despatch: Within 1 days
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    • £2.69 £0.99

Dianthus plumarius 'Sonata'

Carnation, Pink

Flowering all summer with very double, fragrant classic cottage garden pinks. Flowers 16-18 weeks from sowing.

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 1 packet (30 dianthus seeds)

    • Despatch: Within 1 days
    •  
    • £1.49