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 380 products.
 

Echinacea purpurea 'Double Decker'

Coneflower

A very unusual purple-red flowered variety that produces predominantly single flowers in the first growing season, followed by a high percentage of these visually stunning 'twin' flowers in the second season, with the chance that some may even be fully double. These intriguing flowers grace tall, strong stems and make superb long lasting border perennials, attracting many beneficial insects to your garden.
More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

Red Hot Poker 'Traffic Lights'

Kniphofia hirsuta, Torch Lily

An intriguing dwarf red hot poker with unusual red, amber and green flower spikes. First year flowering, adding interest to borders and containers. Height: 30-40cm (12-16in). *Sow Sept/Oct to flower the following season.
More info
    • 1 packet (20 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

Geum flore-plena 'Blazing Sunset'

Avens

A striking variety from T&M breeding. Classified as a perennial but from an early sowing it acts like an annual! Prolific, early flowering, fully double scarlet flowers up to 50% larger than other varieties, over a long period. Fantastic in the border and cottage garden, and a dazzling cut flower. Fleuroselect Quality Award.
More info
    • 1 packet (15 seeds)

    • Despatch: Within 3 days
    •  
    • £3.99

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 3 days
    •  
    • £0.69

Aubrieta 'T&M Mixed Hybrids'

Aubretia

A very special selection of large-flowered Aubretia with a rich colour range. They cascade and spread with vigorous determination. Suitable for rockeries, borders, edging paths, planters etc. Flowers early spring. Spread 18-24in.
More info
    • 1 packet (400 seeds)

    • Despatch: Within 3 days
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    • £1.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £2.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

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 seeds)

    • Despatch: Within 3 days
    •  
    • £3.19

Verbascum x hybrida 'Snow Maiden'

Mullein, Celsia

 Customer Rating

A first class garden plant! Well branched, erect spikes covered in large 4cm (1½in) pure white flowers, over a long period. An incredibly beautiful plant for the back of borders, seldom requiring support.

More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
    •  
    • £0.99

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 3 days
    •  
    • £0.99

Lupin 'Band of Nobles Mixed'

Lupinus

With an exciting and colourful range of robust, densely packed flower spikes produced in early summer, this traditional lupin will enhance any garden scene and looks particularly at home in the cottage garden. Height: 90-120cm (3-4ft). More info
    • 1 packet (35 seeds)

    • Despatch: Within 3 days
    •  
    • £2.69

Stock 'Dwarf Mixed' (Brompton Stocks)

Matthiola incana, Gillyflower

 Customer Rating
Upright bushy, early flowering biennials producing gloriously scented flowers in a good colour range which are splendid for cutting. Flowers early summer. Height 18in.
More info
    • 1 packet (100 seeds)

    • Despatch: Within 3 days
    •  
    • £1.99