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 71 products.
 

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)
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    • 1 packet (100 seeds)

    • Despatch: Within 3 days
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    • £2.99

Aquilegia x hybrida 'Green Apples'

Aquilegia vulgaris var. stellata 'Green Apples', Columbine, Granny's Bonnet

The first green flowered Aquilegia with this spectacular Clematis-like flower formation. The buds open in a delightful lime-green shade, fading to a sumptuous apple-green before ageing to a gentle cream. Makes an interesting feature for borders.
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    • 1 packet (20 seeds)

    • Despatch: Within 3 days
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    • £2.99

Aquilegia x hybrida 'McKana Giants Mixed'

Columbine, Granny's Bonnet

Attractive free-flowering, long spurred mixture in a wide range of vibrant coloured blooms on strong stems, ideal for cutting. Outstanding garden performance.
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    • 1 packet (200 seeds)

    • Despatch: Within 3 days
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    • £2.19

Hellebore (Purple-flowered Christmas Rose)

Helleborus purpurascens

Rarely offered for sale as seed! This exquisite Helleborus produces clumps of robust, leathery foliage along with many large blooms, flushed in shades of purple, pink and even slate grey!

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    • 1 packet (30 seeds)

    • Despatch: Within 3 days
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    • £0.99

Lobelia cardinalis 'Queen Victoria'

Cardinal Flower, Lobelia fulgens, Lobelia splendens

Tall spikes of deep maroon foliage topped by glowing scarlet blooms bring a welcome splash of late summer colour, when many flowers have already faded. This exotic looking, short lived perennial is ideal for filling gaps in damp borders, and looks spectacular planted beside ponds and streams. Height: 90cm (36”). Spread: 30cm (12”).
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    • 1 packet (200 seeds)

    • Despatch: Within 3 days
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    • £2.89

Thalictrum delavayi

Chinese Meadow Rue

This choice plant will grace any border with its shimmering sprays of regal mauve with attractive creamy-yellow stamens. Ideal for cutting. Height: 120-150cm (4-5ft).
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    • 1 packet (40 seeds)

    • Despatch: Within 3 days
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    • £1.49

Helenium autumnale 'Sunshine Hybrids'

Helen's Flower, Sneezeweed

A dazzling colour range of flowers, making a spectacular autumn display in perennial borders. Height: 60-120cm (2-4ft).
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    • 1 packet (300 seeds)

    • Despatch: Within 3 days
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    • £2.59

Foxglove 'Pam's Split'

Digitalis purpurea

A spectacular selection from Digitalis Pam's Choice. This variety is slightly shorter and is multi-stemmed from the base, producing a longer-lasting and impressive display of white blooms with speckled throats. Each flower of Digitalis Pam's Split has an unusual 'split petal' effect, giving them a slightly ruffled look. Eye-catching in borders or cottage gardens. Digitalis Pam's Split will grow in any garden soil in full sun or part shade.
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    • 1 packet (30 seeds)

    • Despatch: Within 3 days
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    • £2.99

Aquilegia viridiflora 'Chocolate Soldier'

Columbine, Granny's Bonnet

This rare, choice species features delicate, nodding, chocolate-brown, 1.5cm (½in) blooms from late spring onwards. The neatly compact plants are perfect for borders and rockeries. A collector's item. Height: 30-35cm (12-14 inches). More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

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 seeds)

    • Despatch: Within 3 days
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    • £1.99

Foxglove 'Camelot Rose' F1 Hybrid

Digitalis

The first ever F1 Hybrid Foxglove! Spectacular plants that reliably flower in the first year, with another heavy flush of flowers in the second year. Uniform plants with high quality flower spikes in a rich carousel of colour as the speckled, jewel-like blooms open all around the stout stems, giving more impact than ever before! Ideal for shady beds and borders. Prefers any well-drained soil in part shade. Height: 90-120cm (3-4ft).
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    • 1 packet (16 pellets)

    • Despatch: Within 3 days
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    • £2.99

Allium giganteum

Giant Allium, Ornamental Onion

One of the tallest of the allium species, the spectacular ball-shaped blooms are made up of masses of tiny bright purple flowers and have a diameter of at least 20cm (8"). The airy spheres of bloom are followed by architectural seedheads that create a spectacular autumn display. Undemanding and easy to grow, these magnificent, long lasting allium flowers are also excellent for cutting. Height: 120cm (48"). Spread: 15cm (6").

Useful links:

How to grow bulbs, corms and tubers

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    • 1 packet (10 seeds)

    • Despatch: Within 3 days
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    • £4.79