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 40 products.
 
Verbena Bonariensis

Verbena bonariensis

Glandularia, Verbena patagonica
Tall heads of bright, eye-catching rosy lavender, adding a tranquil tropical feel to borders. Height: 120-150cm (4-5ft). More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
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    • £2.99
Geranium Pratense Purple Haze

Geranium pratense 'Purple Haze'

Hardy Geranium, Meadow Cranesbill

One of the hardy Geranium discoveries of the century! 'Purple Haze' is a stunning plant, producing amazing foliage with a unique bronze-purple hue, a shade rarely seen in hardy Geranium foliage. The leaves are deepest in shade during spring, gradually changing to an attractive deep green with strong purple edging. Even more exciting is the striking contrast of the blooms, perfectly themed in shades of gorgeous violet-mauve. Height: 60-75cm (24-30in).

 More info
    • 1 packet (5 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.99
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
Nepeta Transcaucasica* Blue Infinity

Nepeta transcaucasica 'Blue Infinity'

Catmint

Tall wands of violet-blue flowers in seemingly infinate quantity over a long period. With its characteristic aromatic fragrance it is extremely effective in the border, long-lived, easily grown and very reliable.

* Seed came to T&M under this name which is yet to be verified.

 More info
    • 1 packet (45 seeds)

    • Despatch: Within 2 Days
    • SAVE £3.30  
    • £3.99 £0.69
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
Exotic : Giant Viper's Bugloss (Echium Pininana)

Echium pininana

Tower of Jewels, Giant Viper's Bugloss, Tree Echium, Echium pinnifolium
 Customer Rating

No wonder this is also called Tower of Jewels or 'Pride of Tenerife! Exceptionally tall flower spikes packed with either rose or purple-blue flowers, interspersed with silver-green lanceolate leaves.

 More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £3.79
Viola x wittrockiana Chalon Supreme Wildberry Mixed

Pansy 'Chalon Supreme Wildberry Mixed'

Viola x wittrockiana
A stunning mixture of large ruffled flowered pansies in a dazzling wild berry blend of purple picotees and rose shades. Bushy compact plants flower over a long period brightening autumn, spring or summer containers. Spring sowings will give flowers during early summer, whilst summer and autumn sowings will bloom the following winter or spring.


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

 More info
    • 1 packet (20 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.29
Agastache hybrida 'Astello Indigo'

Agastache hybrida 'Astello Indigo'

  • NEW in 2013
  • 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: Some parts of these flowers are edible. For more details about edible flowers click here.

 More info
    • 1 packet (15 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Catharanthus Roseus Mediterranean Lilac

Catharanthus roseus 'Mediterranean Lilac'

Vinca rosea, Rosy Periwinkle, Madagascar Periwinkle, Cayenne Jasmine

The first of a new breed in trailing Vincas! Specifically for baskets and containers they are early flowering with large, rounded, overlapping petals forming striking, vivid blooms.

 More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £0.69
Malva Sylvestris 'Zebrina'

Malva sylvestris 'Zebrina'

Mallow

 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: Within 2 Days
    •  
    • £1.49
Eryngium Alpinum Blue Lace

Eryngium alpinum 'Blue Lace'

Sea Holly, Alpine Eryngo
A spectacular alpinum selection with impressive long lasting clear violet-blue terminal flower heads on stunning blue stems. Makes an eye-catching addition to any border, and an attractive cut flower. Height: 85cm (34in). More info
    • 1 packet (25 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.79