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 12 products.
 

Anemone japonica (Mixed)

Japanese Anemone, Anemone x hybrida, Windflower

Elegant, late summer flowering perennials, producing their gorgeous, well shaped blooms mainly in rose to pink shades for many weeks and providing the perfect end to the summer. Happy in sun or light shade. Flowers late summer/autumn, Height: 60cm-1.2m (2-4-ft). More info
    • 1 packet (30 seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Hellebore (Purple-flowered Christmas Rose)

Helleborus purpurascens

Rarely offered for sale as seed! This exquisite Helleborus produces clumps of robust, leathery foliage along with many large blooms, flushed in shades of purple, pink and even slate grey!

More info
    • 1 packet (30 hellebore seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Chrysanthemum x koreanum 'Fanfare Improved' F1 Hybrid

Chrysanthemum x grandiflorum, Florist's Chrysanthemum

The cooler it is the earlier it blooms continuing till hard frost. Double pom-pom, 3in flowers on semi-dwarf plants. Magnificent cut flower.


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 1 packet (40 chrysanthemum seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

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 delphinium seeds)

    • Despatch: Within 1 days
    •  
    • £0.69

Helenium puberulum 'Autumn Lollipop'

Helen's Flower, Rosilla, Helenium puberleum

 Customer Rating

A curious plant for the front of the border. Autumn Lollipop boasts heads of rustic yellow and bronze with a small basal frill of ruffled petals. Highly ornate and also an extremely original cut flower. Height: 60-90cm (24-36in).

More info
    • 1 packet (80 helenium seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Delphinium x cultorum 'Tall Black Knight'

Tall, robust, candle-like flower spikes packing with attractive, deep blue blooms, each complemented by a striking large black bee in the centre. A stunning addition to any border. Height: 120-150cm (4-5ft).
More info
    • 1 packet (100 delphinium seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Delphinium hybridum 'Pacific Giants Mixed'

A justifiably famous and reliable strain that will flower in the summer from an early sowing producing strong spikes of mainly semi-double blooms in a wide colour range on sturdy stems. Flowers early summer. Height 4-5 feet.
More info
    • 1 packet (110 delphinium seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Perennial Seed Mix

A well planned perennial border is a magnificent sight in summer! Flowering year after year, getting bigger each season, hardy perennials represent superb value for money - even more so when you buy perennials from seed. To help you make the most of your borders, we have grouped together varieties by height to help you achieve a balanced display. Height: Up to 120cm (47"). Spread: Up to 60cm (24").

Collection comprises:

  • Tall Perennials
  • Lupin 'Tutti Frutti' (40 seeds) - A mouthwatering range of attractive bicoloured flower spikes.
  • Aquilegia 'McKana Giants' (200 seeds) - Free-flowering, long spurred Columbines.
  • Echinacea 'Pink Parasol' (35 seeds) - Deep purplish-pink blooms, with contrasting orange cones.
  • Eryngium 'Miss Wilmott's Ghost' (30 seeds) - Steel-blue cones surrounded by a collar of prickly, silver leaves.
  • Delphinium 'Magic Fountains' (40 seeds) - The majesty of Delphinium blooms with a neat, dwarf habit.
  • Mid-height Perennials
  • Astrantia 'Ruby Cloud' (22 seeds) - Large flowers of ruby, tinged in apple green.
  • Echinacea 'Magic Box' (30 seeds) - A stunning colour range and superior garden performance.
  • Rudbeckia 'Goldstrum' (100 seeds) - A profusion of bright golden flowers on bushy plants.
  • Lysimachia atropurpurea (40 seeds) - Many spikes of claret-red, almost black florets - a highly unusual colour in perennials.
  • Meconopsis grandis (30 seeds) - Wonderful blue Poppies, shot with violet on erect stems.
  • Short Perennials
  • Wallflower 'Tom Thumb' (200 seeds) - Versatile and undemanding, with a very wide colour range.
  • Veronica 'Mixed Colours' (50 seeds) - Many erect spikes, full of tiny flowers.
  • Nepeta 'Blue Moon' (30 seeds) - A neat, dwarf, bushy, habit, with large dense blue flower spikes.
  • Aubrieta 'T&M Mixed Hybrids'(400 seeds) - A large-flowered mix with a rich colour range.
  • Viola 'Rose Shades' (30 seeds) - A delightful bushy, compact and free flowering variety.
More info
    • 15 varieties - 1 packet of each (1277 perennial seeds in total)

    • Despatch:
    • SAVE *£23.56  
    • £45.55 £19.99
    • Out of stock

Delphinium x cultorum 'Centurion Lilac Blue Bicolour' F1 Hybrid

UK Exclusive. One of the very best delphiniums from seed, equal in quality to expensive cutting-raised plants. The tall, sturdy stems of Delphinium Centurion Lilac Blue Bicolour are covered in truly stunning bi-coloured blooms with triple-layered petals in lilac and blue shades with a white central 'bee'. (Flowers from July to September in its first year if sown before the end of February).
More info
    • 1 packet (12 delphinium seeds)

    • Despatch: Within 1 days
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    • £2.99

Delphinium hybridum 'Magic Fountains Mixed'

This excellent mixture of quality Delphiniums comes as a formula blend of no less than seven colours. Some pure colours; some with white bees. Their dwarf habit eradicates the concern for flower damage caused by windy and wet conditions. They look great at the front of the perennial border, cottage garden or even in containers. Flowers summer. Height 90cm (36in).
More info
    • 1 packet (40 delphinium seeds)

    • Despatch: Within 1 days
    •  
    • £2.99