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
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    • £0.99

Foxglove 'Candy Mountain Peach'

Digitalis purpurea

Following the success of 'Candy Mountain' and 'Snowy Mountain' comes the next individual colour in the 'Mountain' Foxglove series. With the same upward-facing flowers as its cousins, Foxglove 'Candy Mountain Peach' is the perfect perennial for adding height and structure to the back of cottage garden borders. The unusual colour of its peach-tinged and delicately dotted trumpets will attract bees - as well as the admiration of your neighbours! Height: 140cm (55"). Spread: 45cm (18").
More info
    • 1 packet (40 foxglove seeds)

    • Despatch: Within 1 days
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    • £3.39 £0.99

Datura metel 'Double Blackcurrant Swirl'

Brugmansia, Angels' Trumpet, Downy Thorn Apple

 Customer Rating
A dynamic border, container or conservatory plant with large, beautifully double frilled flowers of blackcurrant and lilac-mauve. The many flowers are earlier than most and continue through to frosts outdoors. Flowers mid summer-autumn. Height 1.4m. (5ft)
More info
    • 1 packet (15 datura seeds)

    • Despatch: Within 1 days
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    • £3.99 £0.99

Penstemon x hybrida 'Lilac Frost'

Beard Tongue

Probably the most winter-hardy, resilient Penstemon we have ever found! Bushy mounds of deep green foliage are enhanced by unusual frosty white, bicoloured blooms. Flowers throughout the summer in borders or large containers.
More info
    • 1 packet (50 penstemon seeds)

    • Despatch: Within 1 days
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    • £0.99

Malva sylvestris 'Mystic Merlin'

Mallow

A magical back of border plant with many large, silky blooms in shades from rich purple, through mauve, to the highly unusual and elusive blues. Flowers summer. Height: 150-180cm (5-6ft). Flowers in first year. More info
    • 1 packet (40 malva seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Dianthus amurensis 'Siberian Blues'

Carnation, Pink

This charming hardy perennial forms neat mounds of blue-grey evergreen foliage that contrast beautifully with the lavender blue flowers. Dianthus amurensis 'Siberian Blue' blooms over a long period throughout summer on resilient, dense plants with a vigorous habit. Perfect for planting in rockeries, alpine troughs and at the front of borders where it will form useful low maintenance ground cover. Height: 38cm (15"). Spread: 30cm (12").

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 (100 dianthus seeds)

    • Despatch: Within 1 days
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    • £2.49

Dianthus barbatus 'Kaleidoscope Mixed'

Sweet William

  • 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: 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 (40 dianthus seeds)

    • Despatch: Within 1 days
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    • £1.99

Scabious 'House's Novelty Mix'

Scabiosa caucasica, Pincushion Flower, Caucasian Scabious

A truly elegant border perennial with blooms in blue, mauve and white on long slender stems which are much in demand for cut flowers. Flowers summer. Height 30in.
More info
    • 1 packet (35 scabious seeds)

    • Despatch: Within 1 days
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    • £2.99

Centaurea dealbata

Cornflower, Bachelor's Buttons

An attractive clump forming lavender pink cornflower, with the unusual characteristic of being perennial and flowering In the first year. Easy to grow. adding height and interest to borders, as well as making a superb border cut flower. Height: 80-90cm (32-36in). First Year Flowering Perennial, flowering in June/July.
More info
    • 1 packet (80 centaurea seeds)

    • Despatch: Within 1 days
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    • £2.29

Knautia macedonica 'Melton Pastels'

Macedonian Scabious, Scabiosa rumelica

Glorious scabious-like, 4cm (1½in) pin cushion blooms in the softer hues: blue, mauve, pink, rose, salmon and crimson. Excellent back of border plant producing masses of flowers in two flushes (provided you cut down spent bloom), through to autumn frosts. Suitable for most types of soil. Flowers summer to early autumn. Height 90-120cm (3-4ft).
More info
    • 1 packet (30 knautia macedonica seeds)

    • Despatch: Within 1 days
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    • £3.99

Berkheya purpurea

Purple Berkheya, Stobaea purpurea

Large, mauve to white flowers above very prickly, dark green foliage with attractive looking cobwebs draped over the leaves adding to its character. Makes an excellent architectural border plant. Height: 45-60cm (18-24in) More info
    • 1 packet (15 berkheya seeds)

    • Despatch: Within 1 days
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    • £2.99

Geranium pratense 'Splish Splash™'

Geranium pratense 'Striatum', Hardy Geranium, Meadow Cranesbill

One of the most beautiful, striking and unusual Perennial Geraniums with mauve-blue splashes and flecks on pure white petals, each 3cm (¼in) flower head appearing to be individually designed and painted. A fascinating, rare and prized border plant, coming remarkably true from seed. Flowers summer. Height: 45-75cm (18-30in).

More info
    • 1 packet (8 geranium seeds)

    • Despatch: Within 1 days
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    • £0.99