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 168 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.
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    • 1 packet (20 echinacea seeds)

    • Despatch: Within 1 days
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    • £0.99

Cyclamen 'All-the-year-round Flowering Mixed'

 Customer Rating
A balanced mixture of hardy garden varieties thriving in shade or woodland, chosen from species flowering at most periods of the year. Height: 8-15cm (3-6in).
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    • 1 packet (16 cyclamen seeds)

    • Despatch: Within 1 days
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    • £0.99

Commelina dianthifolia

Bird-bill Day Flower, Widow's Tears

 Customer Rating

A very rare plant indeed. This is one of the few plants with such intense blue flowers and that will also perform well in the garden. Flowering in its first year with 2.5cm (1in) gentian blue flowers, it then produces tubers and springs back to life the following year with an unceasing display of blooms. Wonderful in containers, rock gardens and the border (regardless of soil conditions). Hardy down to -8/-10C. Flowers summer. Height 15-30cm (6-12in.)

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    • 1 packet (25 commelina seeds)

    • Despatch: Within 1 days
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    • £0.99

Red Hot Poker 'Traffic Lights'

Kniphofia hirsuta, Torch Lily

 Customer Rating
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.
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    • 1 packet (20 red hot poker seeds)

    • Despatch: Within 1 days
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    • £0.99

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).
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    • 1 packet (200 seeds)

    • Despatch: Within 1 days
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    • £2.99

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).
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    • 1 packet (15 salvia seeds)

    • Despatch: Within 1 days
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    • £0.99

Pansy 'Jolly Joker' F2 Hybrid

Viola x wittrockiana

Jolly Joker, awarded the AAS Medal 1990 and the 1990 Fleuroselect Gold Medal, is probably the most spectacular pansy of its class. The intense orange of its lower petals, contrasts sharply with the deep purple of the upper petals. The effect is both unusual and intriguing. A very versatile and hardy variety which can be sown early for summer flowers or in summer for flowering in autumn and spring and even; in mild winters, through the winter. Height: 15-23cm (6-9in).

Culinary note: Some parts of these flowers are edible. The crystallised petals are great decorations for cakes and cookies, or they can be added straight to green salads for an injection of colour. For more details about edible flowers click here.

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    • 1 packet (40 pansy seeds)

    • Despatch: Within 1 days
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    • £0.99

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).

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    • 1 packet (5 geranium seeds)

    • Despatch: Within 1 days
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    • £0.99

Cerastium tomentosum

Snow-in-summer

 Customer Rating

A low spreading rock plant with silvery leaves, topped by pure white flowers. Easy and attractive, particularly useful for quickly covering sunny banks etc. Each plant having a spread of 60cm (24in). Flowers late spring/summer.

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    • 1 packet (320 cerastium seeds)

    • Despatch: Within 1 days
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    • £0.99

Rudbeckia occidentalis 'Green Wizard'

Western Coneflower

A very curious and extraordinary plant for the back of borders. Bright green sepals, where most plants have petals and a central, almost black cone. An unusual fresh cut flower, long lasting in water, or use in dried arrangements. Easy to grow, quickly forming a good sized plant with plenty of lush green foliage and always a talking point. Flowers summer. Height: 120-152cm (4-5ft). More info
    • 1 packet (30 rudbeckia seeds)

    • Despatch: Within 1 days
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    • £0.99

Lysimachia atropurpurea

Loosestrife

A superb border plant with silver- green lanceolate foliage and many spikes of claret-red, almost black florets - a highly unusual colour in perennials. May also be used in containers or as a cut flower.
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    • 1 packet (40 lysimachia seeds)

    • Despatch: Within 1 days
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    • £3.69

Meconopsis cambrica 'Double Mixed'

Welsh Poppy

Welsh Poppy. An exclusive and rare mix of silky pom-pom blooms in orange, red and yellow. The Welsh Poppy is a breezy perennial for dappled shade, blooming from mid-spring right through to autumn. Occasionally an odd single flower may also appear. More info
    • 1 packet (50 meconopsis seeds)

    • Despatch: Within 1 days
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    • £0.99