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 155 products.
 
Coreopsis Grandiflora Presto

Coreopsis grandiflora 'Presto'

Tickseed
A breeding breakthrough, a true first year flowering perennial Coreopsis, ideal for planting in containers, window boxes or towards the front of borders. Naturally dwarf and compact ball-shaped plants are smothered in double golden yellow blooms all summer. More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.19
Viola X Williamsiana Singing The Blues

Pansy 'Singing the Blues'

Viola x wittrockiana

This mixture of four enchanting colours, in shades and contrasts of blue, are not just pretty but the most sensational breakthrough in Violas for a decade. They were specifically bred for containers, baskets and ground cover, possessing a unique trailing habit. Above all they are wonderfully fragrant with a gorgeous, pervading sweet scent. Flowers appear in abundance and because they are tolerant to cold and heat, they can be grown all year round. Height: 2-3in Flowers spring/summer.


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

 More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
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    • £0.69
Commelina Dianthifolia

Commelina dianthifolia

Bird-bill Day Flower, Widow's Tears

  Customer Rating

A very rare plant indeed. This is one of the few plants with such intense blue flowers and that will also perform well in the garden. Flowering in its first year with 2.5cm (1in) gentian blue flowers, it then produces tubers and springs back to life the following year with an unceasing display of blooms. Wonderful in containers, rock gardens and the border (regardless of soil conditions). Hardy down to -8/-10C. Flowers summer. Height 15-30cm (6-12in.)

 More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.49
Gaillardia x grandiflora 'Arizona Red Shades'

Gaillardia x grandiflora 'Arizona Red Shades'

Blanket Flower
  • First red gaillardia from seed
A spectacular new dwarf Blanket Flower with a long-flowering period and superb garden performance. Flowering in their first year, the fiery red blooms sit neatly above uniform, well-branched plants throughout summer and well into autumn. Gaillardia x grandiflora 'Arizona Red Shades' is undemanding, providing fabulous colour whatever the weather. Perfect for containers or filling gaps in the front of borders. Height: 30cm (12”). Spread: 45cm (18”). More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Dianthus barbatus 'Kaleidoscope Mixed'

Dianthus barbatus 'Kaleidoscope Mixed'

Sweet William
  • NEW in 2013
  • RHS Perfect for Pollinators
A cottage garden favourite with an unusual colour twist! This beautiful Sweet William produces large heads of pretty pink flowers that gradually mature to white, creating a delightful bicolour effect. Sweet William ‘Kaleidoscope’ is highly scented with multi branching stems that make it superb for cutting. Often grown as a biennial, this short lived perennial is ideal for borders, beds and containers, and will even flower in the same year if sown early. Height: 60cm (24”). Spread: 30cm (12”).

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

 More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.99
Delosperma Floribunda Stardust

Delosperma floribunda 'Stardust'

Ice Plant
 Customer Rating
The perfect plant for that hot, dry spot in your borders or rockeries. Dwarf, shiny, deep green, almost metallic-looking succulent foliage bursts into bloom from mid May. Plants are covered with spectacular lilac-purple flowers flowers with large white centres, flowering until the first frost. Loved by butterflies. Height: 10-15cm (4-6in) More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.29
Salvia coccinea 'Summer Jewel Red'

Salvia coccinea 'Summer Jewel Red'

Scarlet Sage
  • NEW in 2013
  • Flowers all summer until the first frosts
Applauded by Fleuroselect judges, Salvia coccinea 'Summer Jewel Red' is quicker to flower and more compact than other dwarf salvias. This free flowering variety bears its long lasting scarlet blooms above compact aromatic foliage. Scarlet Sage makes a stunning addition to borders and containers where it will attract pollinating insects to its fiery blooms. Although perennial, Salvia coccinea is half hardy and best treated as an annual in the UK. Height: 45cm (18"). Spread: 30cm (12"). More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Lysimachia Atropurpurea

Lysimachia atropurpurea

Loosestrife
A superb border plant with silver- green lanceolate foliage and many spikes of claret-red, almost black florets - a highly unusual colour in perennials. May also be used in containers or as a cut flower. More info
    • 1 packet (40 seeds)

    • Despatch: Within 2 Days
    •  
    • £3.29

Echinacea 'PowWow Wild Berry'

Coneflower
With outstanding garden performance and the capacity to produce more flowers per plant than any other seed-raised Coneflower, Echinacea ‘PowWow Wild Berry’ is a striking addition to any garden. Whether grown as a first-year flowering or as a traditional over-wintered perennial, its unique and intense deep-pink flowers with their dark rose centres will invigorate borders and pots with their vivid colour. Coneflower plants are particularly useful for exposed coastal sites and wildlife gardens. Height: 60cm (24"). Spread: 45cm (18"). More info
    • 1 packet (10 seeds)

    • Despatch: Within 2 Days
    •  
    • £3.99
Erigeron Karvinskianus Profusion

Erigeron karvinskianus 'Profusion'

Fleabane, Mexican Fleabane
Lovely subject for hanging baskets, window boxes, patio tubs. Flowers within 3 months. More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Dianthus Plumarius Sonata

Dianthus plumarius 'Sonata'

Pink
Flowering all summer with very double, fragrant classic cottage garden pinks. Flowers 16-18 weeks from sowing.

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

 More info
    • 1 packet (30 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.99
Delphinium Grandiflorum Summer Nights

Delphinium grandiflorum 'Summer Nights'

Delphinium chinense

Attractive dwarf plants covered in a blanket of dainty midnight-blue flowers. Flowering in their first year from sowing makes them perfect for bedding borders or containers, providing a colourful display over a long summer period.

 More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.69