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.
 

Salvia patens

Gentian Sage

A classic border plant, ideal for adding a cool blue drift to your planting schemes. The attractive, large blue hooded florets are borne on erect stems above toothed foliage. First year flowering, blooms throughout the summer into autumn. Height: 45-60cm (18-24in).
More info
    • 1 packet (15 salvia seeds)

    • Despatch: Within 1 days
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    • £0.99

Canna indica 'T&M Hybrids'

Indian Shot Plant

 Customer Rating
Shades of yellow, red and cream with pretty bronze or green foliage. Sow early.
More info
    • 1 packet (15 canna indica seeds)

    • Despatch: Within 1 days
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    • £0.99

Cyclamen persicum grandiflorum 'Scentsation Mixed'

Florist's Cyclamen, Persian Cyclamen

Lingering Freesia-like fragrance of one plant can fill a room. More info
    • 1 packet (10 cyclamen seeds)

    • Despatch: Within 1 days
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    • £0.99

Tropaeolum speciosum

Flame Nasturtium, Flame Flower, Flame Creeper

Flame Flower. Gorgeous scarlet flowered climber. Climbs to 180-300cm (6-10ft).
More info
    • 1 packet (10 tropaeolum speciosum seeds)

    • Despatch: Within 1 days
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    • £4.69

Geranium 'Horizon Coral Spice' F1 Hybrid

Pelargonium x hortorum, Zonal Geranium, Zonal Pelargonium

A gorgeous new warm colour in geraniums. Large, well rounded, bright coral flower heads above lightly zoned foliage. With vigorous performance, it will flower nonstop until first frosts.
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 1 packet (6 geranium seeds)

    • Despatch: Within 1 days
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    • £0.99

Cineraria 'Jester Scarlet'

Pericallis x hybrida, Cineraria cruentus, Cineraria x hybrida, Florists' Cineraria, Senecio x hybridus

A really striking bicolour which is dwarf and uniform in appearance, offering a carpet of scarlet-copper flowers with a distinct pure white centre. Height: 20-25cm (8-10in).

More info
    • 1 packet (25 cineraria seeds)

    • Despatch: Within 1 days
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    • £0.99

Mimulus x hybridus 'Magic Yellow Flame' F1 Hybrid

Diplacus, Monkey Flower, Musk

Wow! Dwarf compact early flowering plants are smothered in stunning golden-yellow blooms. Intriguingly marked with delicate vibrant orange spots. This versatile variety for borders or containers will burst into colour when grown in sun or shade. Height: 15-23cm (6-9in). More info
    • 1 packet (40 mimulus seeds)

    • Despatch: Within 1 days
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    • £0.99

Snail Vine

Vigna caracalla, Phaseolus caracalla, Snail Flower, Snail Bean, Corkscrew Flower

 Customer Rating
This quick growing, evergreen twining climber is a close relative to the runner bean, grown for its pendants of twisted flowers, like coiled snail shells, up to 5cm (2") across. The fascinating summer flowers are followed by cylindrical green fruits in late autumn. Requiring a minimum temperature of 15°C (59°F), Vigna caracalla is best grown in patio containers that can be moved indoors to a heated greenhouse or conservatory for the winter. Alternatively, grow snail vines outdoors as an annual. Height: 6m (20'). Spread: 2m (6').
More info
    • 1 packet (4 snail vine seeds)

    • Despatch: Within 1 days
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    • £0.99

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 catharanthus seeds)

    • Despatch: Within 1 days
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    • £0.69

Geranium 'Horizon Pink Ice' F1 Hybrid

Pelargonium x hybrida, Zonal Geranium, Zonal Pelargonium

Striking pink geranium. These robust plants are very bushy and free-flowering, creating an eye-catching display in borders or containers. Sow from January to mid-March to produce flowering plants by early summer. 30-35cm (12-14in)
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 1 packet (6 geranium seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Gerbera jamesonii 'T&M Mixed' F2 Hybrid

Barberton Daisy, Transvaal Daisy

Fast growing and early to flower, this special T&M blend of large- bloomed gerbera make spectacular house plants. Perfect for the patio in summer and a sunny windowsill or glasshouse during the cooler months, they'll provide months of vibrant colour. The flowers are of the very best quality and make excellent cut flowers. Height: 30-40cm (12-16"). More info
    • 1 packet (30 gerbera seeds)

    • Despatch: Within 1 days
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    • £2.69

Salvia coccinea 'Summer Jewel Pink'

Scarlet Sage

Applauded by Fleuroselect judges, Salvia coccinea 'Summer Jewel Pink' is the latest addition to the ÔSummer Jewel' series. Quicker to flower and more compact than other dwarf salvias, this free flowering variety bears its long lasting shell pink blooms above compact aromatic foliage. Scarlet Sage makes a stunning addition to borders and containers where it will attract pollinating insects to its delicate blooms. Although perennial, Salvia coccinea is half hardy and best treated as an annual in the UK. Height: 45cm (18"). Height: 45cm (18"). Spread: 30cm (12"). More info
    • 1 packet (30 salvia seeds)

    • Despatch: Within 1 days
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    • £2.79