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 382 products.
 

Lisianthius nigrescens

Flower of Death

This rare exotic plant is little known outside its native homeland of Mexico. A choice species, and seldom offered, Lisianthius nigrescens bears long, tubular flowers of the darkest black, on slender, towering stems. This extraordinary perennial makes a dramatic specimen plant and a fascinating talking point that will create interest and wonder at the back of borders. Lisianthius nigrescens is half-hardy but will require winter protection in a frost free environment during the winter months. Height: 180cm (71"). Spread: 50cm (20"). More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
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    • £3.29

Echinops ritro subsp. ruthenicus

Globe Thistle

Tight clusters of deep blue flowers form mini-globes on long, strong straight stems of pure silver. The foliage is amazing and quite unique, giving off a silver sheen whatever the weather. Incredibly ornamental in or out of flower. An all round superb species with ideal height.
More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
    •  
    • £3.29

Verbena hastata 'Pink Spires'

Glandularia, Vervain, Verbena hastata f. rosea

A stunning Verbena, enhanced by vivid deep pink flowers borne on well branches spikes. Flowers over a very long period. Adds height to borders as well as making a splendid cut flower. Height: 90-120cm (3-4 feet) More info
    • 1 packet (50 seeds)

    • Despatch: Within 3 days
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    • £2.89

Primula x tommasinii 'You and Me Blue'

Hose-in-Hose Primula, Polyanthus

A rarely-offered Primula with the amazing feature of producing two layers of flowers per stem. This unique flower form was first recorded in 1597 and was known as 'Hose in Hose' types after the way Elizabethan gentlemen wore their stockings! You & Me Blue is a delightful selection, which shows off this intriguing characteristic at its best, as well as displaying excellent garden performance and winter hardiness in borders or containers. Height: 15-20cm (6-8in). More info
    • 1 packet (12 seeds)

    • Despatch: Within 3 days
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    • £1.89

Foxglove 'Glittering Prizes Mixed'

Digitalis purpurea

 Customer Rating

A much sought after old traditional foxglove with flowers much larger than usual which are delightfully and exotically splashed and mottled in a good range of rich colours, purple, lilac, cream, white and rose. Each flower has a large purple blotched throat. A tall, majestic plant flowering somewhat earlier than other varieties. Ideal for the back of the border and a excellent cut flower. Flowers early summer. Height 120-180cm (4-6ft).

More info
    • 1 packet (300 seeds)

    • Despatch: Within 3 days
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    • £0.69

Agapanthus 'Headbourne Hybrids'

African Blue Lily

Free flowering with large round heads of true blue flowers growing into a thick established clump. Truly hardy. Bold, attractive bulbous plants for sheltered borders, tubs, containers etc. Elegant strap shaped leaves and bunches of blue flowers on 2-3ft long sterns. The dried seed head can be used for winter decoration. There is considerable evidence that these hybrids are really hardy in many parts of the British Isles, particularly where good drainage is possible. They flower freely in their second year and generally make very good garden plants, growing into a thick established clump. Flowers mid/late summer. More info
    • 1 packet (22 seeds)

    • Despatch: Within 3 days
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    • £3.99

Monarda citriodora subsp. austromontana 'Bees' Favourite'

Bee Balm, Bergamot

 Customer Rating
Masses of flower spikes bearing tiers of soft mauve flowers are produced by this quick and easy to grow border plant. It flowers easily in its first season from an early sowing, producing a bold display of flowers over a long period. Exceptional for its unusually shaped flowers on strong square stems and the rich minty fragrance, which is freely released when the plant is brushed. Compact upright habit and makes a very neat and tidy plant which will add structure and shape to the border, particularly if planted in groups of three. Excellent for cutting and beloved by bees. Requirements: One of the easiest perennials to cultivate. Happy in sun or light shade and any ordinary garden soil, although they prefer a rich moisture retentive soil which doesn't dry out in the summer. They are very easy to grow, the mat like roots soon forming a large clump, but are not usually invasive. In dry soils they don't grow quite so tall.

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
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    • £3.39

Erodium pelargoniflorum 'Sweetheart'

Heron's Bill

 Customer Rating
This attractive plant resembles an Angel Pelargonum with dainty, violet-veined, white flowers and fragrant foliage when rubbed. Flowering all summer, it creates an impressive ground cover plant for the border or rock garden.
More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
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    • £0.99

Aquilegia x hybrida 'Royal Purple'

Columbine, Granny's Bonnet, Aquilegia clematiflora, Aquilegia vulgaris var. stellata 'Royal Purple'

A specially selected spurless form, producing clematis-like flowers of a deep, rich royal purple colour. Aquilegia 'Royal Purple' has outstanding garden performance . This hardy perennial columbine is ideal for cottage garden borders and shady woodlands. Height: 60cm (24"). Spread: 40cm (16"). More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
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    • £0.69

Wallflower 'Bedding Mixed'

Erysimum, Cheiranthus

A special selection drawn from the widest colour range of the named varieties. Versatile and undemanding, this short lived perennial tends to be grown as a biennial, and is tough enough to cope in even the poorest of soils. Height: 38-45cm (15-18in) More info
    • 1 packet (400 seeds)

    • Despatch: Within 3 days
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    • £2.59

Malva sylvestris 'Zebrina'

Mallow

 Customer Rating
An easily raised perennial thriving in sun or part shade and producing strong, erect stems crammed with white to pink flowers with purple, almost black 'flamed' markings. Easy, thriving in most soils. A magnificent display. Flowers all summer. Flowers in first year.
More info
    • 1 packet (50 seeds)

    • Despatch: By end of August 2014
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    • £0.99

Rudbeckia 'All Sorts Mixed'

Coneflower, Black-eyed Susan

Made up from the full range of varieties we offer. Excellent for cutting and border. Most in fact are hardy perennials in temperate climates in all but the severest winter.
More info
    • 1 packet (170 seeds)

    • Despatch: Within 3 days
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    • £2.99