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.
 

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 penstemon seeds)

    • Despatch: Within 1 days
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    • £0.99

Catananche caerulea

Blue Cupidone, Cupid's Dart

An easy to raise, free flowering plant for the front of the border. The brilliant sky blue flowers are freely produced and are excellent for cutting, lasting a long time in water. They can also be dried for winter decoration. Will flower the same year from a late winter sowing. Flowers summer. Height 60cm (2ft).
More info
    • 1 packet (100 catananche seeds)

    • Despatch: Within 1 days
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    • £2.99

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).
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    • 1 packet (200 seeds)

    • Despatch: Within 1 days
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    • £2.99

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 aquilegia seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

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).
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    • 1 packet (30 nepeta seeds)

    • Despatch: Within 1 days
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    • £2.99

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 delphinium seeds)

    • Despatch: Within 1 days
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    • £2.99

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 teasel seeds)

    • Despatch: Within 1 days
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    • £2.99

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 campanula seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Verbascum chaixii 'Album'

Nettle-leaved Mullein, Verbascum chaixi var. album 'Milk Shake', Celsia

A stately perennial for the back of the border with slender spires of white flowers with mauve eye. The leaves covered with white woolly hairs add to the overall charm and make this a fine subject for blending with plants of harsher colours. Useful for flower arranging. Flowers summer. Height 120-150cm (4-5ft).

More info
    • 1 packet (125 verbascum seeds)

    • Despatch: Within 1 days
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    • £0.99

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 also comes quite true from seed. 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 geranium seeds)

    • Despatch: Within 1 days
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    • £1.49