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 29 products.
 

Wallflower 'Sugar Rush' F1 Hybrid

Erysimum, Cheiranthus

  • Best New Bedding Plant at the Grower of the Year Awards 2013

Winner in the 'Best New Bedding Plant' category at the Grower of the Year Awards 2013, this is one of the most exciting wallflowers to emerge in recent years. Dense, fragrant flower spikes in shades of cream, yellow, red and purple appear not only in the spring, but throughout the autumn too, blooming just 10 weeks after sowing! With a delightful sweet fragrance and compact, multi-branching habit, Wallflower 'Sugar Rush' is perfect for beds, borders, containers and window boxes, creating a mass of colour and scent when much of the garden is dormant. Versatile and undemanding, wallflowers are tough enough to cope in even the poorest soils. Height and spread: 30cm (12").

More info
    • 1 packet (20 wallflower seeds)

    • Despatch: Within 1 days
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    • £2.99

Aquilegia 'Sweet Rainbows'

Columbine, Granny's Bonnet

A breeding breakthrough! The result of merging a full range of top quality Aquileglas, all selected for form, colour and the best fragrance. Ideal for adding sweet scentsation to any border.
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    • 1 packet (20 aquilegia seeds)

    • Despatch: Within 1 days
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    • £3.19

Agastache foeniculum 'Golden Jubilee'

Anise Hyssop, Agastache rugosa, Agastache anisata, Agastache anethiodora

Attractive, golden-green foliage with a distinct aniseed fragrance, making a vibrant contrast to the compact lavender-blue flower spikes. Adds interest to borders and containers, as well as attracts wildlife to your garden. Fragrant and excellent in borders or containers.

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 (20 agastache seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Agastache hybrida 'Astello Indigo'

  • Fleuroselect Gold Medal
Indulge your senses with the fabulous mint-scented flower-spikes of Agastache hybrid 'Astello Indigo'. The long-lasting, deep blue flower spikes are irresistible to bees and butterflies and make a fabulous addition to borders and containers. This attractive half-hardy perennial is ideal for gravel gardens and wildlife borders, although it is generally grown as an annual in colder areas. Height: 60cm (24"). Spread: 30cm (12").

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 (15 agastache seeds)

    • Despatch: Within 1 days
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    • £2.99

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.

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    • 1 packet (75 dianthus seeds)

    • Despatch: Within 1 days
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    • £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: By end of July 2016
    •  
    • £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
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    • £1.49

Wallflower 'My Fair Lady Mixed'

Erysimum cheiri, Cheiranthus

A neat, uniform free flowering strain. Soft, fragrant colours; lemon, cream, gold, apricot, purple, pink, salmon, rose and mahogany. 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: 37-45cm (15-18in).
More info
    • 1 packet (400 wallflower seeds)

    • Despatch: Within 1 days
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    • £2.99

Dianthus 'Rainbow Loveliness Improved Mixed'

Carnation, Pink

Years of selection means that we're now able to offer customers this very pretty and unusual-looking Dianthus. Unique blooms with deeply cut petals give Dianthus 'Rainbow Loveliness Improved Mixed' a soft, feathery appearance. These pretty, eye-catching pinks have a strong, sweet fragrance that makes them a delightful cut flower for a vase indoors. Compact and hardy, they will quickly form attractive clumps at the front of borders, or try planting them in containers for a low maintenance display on the patio. Dianthus 'Rainbow Loveliness Improved Mixed' will flower in its first year if sown by the end of February. Height and spread: 30cm (12").


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
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    • £2.99

Tree Peony 'Rockii Mixed'

Paeonia

  • Rarely offered seed
A much sought-after variety. The tissue paper white blooms are splashed with deep burgundy at the base of each petal. There are few plants that can compete with the beauty of a tree peony in full bloom. A mature plant can boast in excess of a hundred exotic blooms, each measuring up to 25cm (10") or more in diameter! These exceptional shrubs are hardy and disease resistant, and will continue to bloom for a lifetime. The exotic flowers of Tree Peony 'Rockii Mixed' are simply breathtaking in borders and make exquisite cut flowers. When grown from seed, tree peonies will reward patient gardeners by blooming 5-7 years from sowing. Height and spread: 150cm (60").

Useful links:

How to plant peonies

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    • 1 packet (5 tree peony seeds)

    • Despatch: Within 1 days
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    • £2.99

Lavender 'Mini Blue'

Lavandula angustifolia, English Lavender

A delightful dwarf lavender flowering in its first year from an early sowing! Compact, rounded plants quickly become smothered with masses of highly fragrant, deep purple lavender flowers from mid-summer onwards, which are highly attractive to bees. With impressive garden performance, Lavender 'Mini Blue' is ideal for growing in containers or used as a neat evergreen edging to beds and borders. Height: 30cm (12"). Spread: 35cm (14").


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


Useful links:

Gardening news: Top 10 evergreen shrubs

More info
    • 1 packet (20 lavender seeds)

    • Despatch: Within 1 days
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    • £2.99

Primula veris

Cowslip

The famous meadow and hedge row plant of simple beauty. Fragrant lemon yellow pendulous blooms. Easy to grow in sun or part shade. Flowers spring. Height 23cm (9in). Contact with the leaves may cause skin allergy to some people with sensitive skins.

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

More info
    • 1 packet (150 primula seeds)

    • Despatch: Within 1 days
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    • £2.99