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 28 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

Dianthus barbatus 'Indian Carpet Mixed'

Sweet William

A dwarf compact variety with a very wide colour range and excellent for bedding. It can be treated either as a biennial or as a half hardy annual to produce flowers the same season usually in around 10 weeks from sowing. Flowers early summer. Often grown as a biennial, this short lived perennial is ideal for cottage garden borders, beds and containers. Height 6in.

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 (400 dianthus seeds)

    • Despatch: Within 1 days
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    • £2.29

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
    •  
    • £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.
More info
    • 1 packet (20 aquilegia seeds)

    • Despatch: Within 1 days
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    • £3.19

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 wallflower seeds)

    • Despatch: Within 1 days
    •  
    • £2.59

Dianthus barbatus 'T&M Auricula-eyed Mixed'

Sweet William

Irresistible, sparkling, gay colours for the garden with a sweet, carnation-like fragrance. Everybody can grow them to perfection. They are excellent for cutting and last for a long time in water. Flowers late spring/early summer. Often grown as a biennial, this short lived perennial is ideal for cottage garden borders, beds and containers. Height 46cm (18in).


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 (450 seeds)

    • Despatch: Within 1 days
    •  
    • £1.99

Wallflower 'Scarlet Bedder'

Erysimum cheiri, Cheiranthus

Sweetly fragrant scarlet flowers on dwarf sturdy plants. Just right for containers and beds, where space is limited or to underplant tall bulbs. Flowers spring. 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: 35-45cm (15-18in). More info
    • 1 packet (200 seeds)

    • Despatch: Within 1 days
    •  
    • £1.99

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

Wallflower 'Tom Thumb Mixed'

Erysimum cheiri, Cheiranthus

 Customer Rating
Very wide colour range, excellent in small spaces, tubs, window boxes. Slightly later flowering. 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.
More info
    • 1 packet (200 wallflower seeds)

    • Despatch: Within 1 days
    •  
    • £1.99

Dianthus barbatus 'Excelsior Mixed'

Sweet William

Often grown as a biennial, this short lived perennial is ideal for cottage garden borders, beds and containers.

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 (300 seeds)

    • Despatch: Within 1 days
    •  
    • £2.29

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: Within 1 days
    •  
    • £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
    •  
    • £1.49