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 10 products.
 
Verbena Bonariensis

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: Within 2 Days
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    • £2.99
Geranium Wallichianum Buxtons Blue

Geranium wallichianum 'Buxton's Blue'

Geranium wallichianum 'Buxton's Variety', Hardy Geranium, Cranesbill
This is definitely the star of the perennial geranium family producing flowers virtually non-stop from mid summer to early autumn. The flowers themselves are a delight, a gorgeous clear opal, or Nemophila blue with large white centres, against which the dark stamens and dark veining of the petals contrast beautifully. The plant forms an attractive clump with attractive wedge shaped, silky, deeply toothed leaves, making this a very garden worthy plant even when not in flower. It comes quite true from seed and has been given an Award of Garden Merit by the Royal Horticultural Society. Requirements: One of the easiest perennials to cultivate, happy in sun or light shade and any free draining garden soil. More info
    • 1 packet (8 seeds)

    • Despatch:
    •  
    • £1.49
    • Out of stock
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
Aquilegia Caerulea

Aquilegia caerulea

Rocky Mountain Columbine, Colarado Blue Columbine, Granny's Bonnet
Possibly the most beautiful Aquilegia of all. With glorious light to deep blue flowers 2-3in across sometimes fetching bi-coloured with white. An excellent border perennial, grand for cutting, in bloom for several weeks and will grow in sun or light shade. Flowers late spring/early summer. Height: 30-35cm (12-14in) More info
    • 1 packet (100 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Nepeta Nervosa Blue Moon

Nepeta nervosa 'Blue Moon'

Catmint
A neat, dwarf, bushy, habit, with large dense blue flower spikes, over a very long period. Quick to flower in 12-16 weeks from an April sowing. Ideal for borders and containers. Height: 30-40cm (12-16in). More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
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    • £2.49
Dipsacus sylvestris

Teasel

Dipsacus fullonum, Dipsacus sylvestris
Tall, striking, thistle-like plants with serrated leaves and large spiny flower heads. A valuable source of nectar for bees and butterflies, as well as attracting many seed-eating birds to your garden or wild flower meadow. Makes attractive, dried, cut flowers. More info
    • 1 packet (100 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Eryngium Planum Blue Hobbit

Eryngium planum 'Blue Hobbit'

Sea Holly, Blue Eryngo
The world's first naturally dwarf variety! Compact plants produce neat, basal rosettes from which emerge decorative, silver-blue stems that form into large, globular flower heads containing hundreds of small blue flowers. Ideal for adding interest to the front of borders or to containers. Seeds sown from November to January require no pre-chilling and will usually flower in their 1st year. More info
    • 1 packet (15 seeds)

    • Despatch: Within 2 Days
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    • £1.49
Campanula Rotundifolia

Campanula rotundifolia

Harebell, Scottish Bluebell, Bellflower

 The pretty British Harebell otherwise known as the bluebell of Scotland, produces thin wiry stems of nodding pale blue flowers. An easy, charming plant for rockery, border etc. More info
    • 1 packet (1000 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Verbena Bonariensis

Verbena bonariensis - Part of the Alan Titchmarsh Collection

Glandularia, Verbena patagonica
 
  • Tall and tranquil
  • First year flowering

This increasingly popular first year flowering perennial produces robust plants, with wiry stems topped by floating clouds of eye-catching, rosy lavender blooms. Plant Verbena bonariensis amongst other perennials to add height and an air of tranquillity in your borders. Height: 150cm (59"). Spread: 45cm (18").

 More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Delphinium X Cultorum Centurion Lilac Blue Bicolour F1 Hybrid

Delphinium x cultorum 'Centurion Lilac Blue Bicolour' F1 Hybrid

UK Exclusive. One of the very best delphiniums from seed, equal in quality to expensive cutting-raised plants. The tall, sturdy stems of Delphinium Centurion Lilac Blue Bicolour are covered in truly stunning bi-coloured blooms with triple-layered petals in lilac and blue shades with a white central 'bee'. (Flowers from July to September in its first year if sown before the end of February). More info
    • 1 packet (12 seeds)

    • Despatch: Within 2 Days
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    • £2.99