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 38 products.
 

Heteropappus meyendorfii 'Blue Knoll'

Seed of this amazing new garden plant can be sown early in the year* and by the same autumn will be completely smothered in hundreds and thousands of shiny, light reflecting flowers, forming perfect mounds (or knolls) 30cm (12in) high and 45cm (18in) across. During a season when little else is in flower, they are a perfect fit for a change in containers or will brighten up the border, looking like blue charm chrysanthemums. No matter what the weather conditions - torrential rain, snow or frost they continue to look far and away the best, brightest plant in the garden, even right through November. *Sow during January/February to flower in October/November. Sow September/October to flower following September/October. More info
    • 1 packet (50 heteropappus seeds)

    • Despatch: Within 1 days
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    • £0.99

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 echinacea seeds)

    • Despatch: Within 1 days
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    • £0.99

Calceolaria 'Sunset Mixed'

Slipper Flower, Pocketbook Plant, Pouch Flower, Slipperwort

Three stunning colours for summer bedding and containers, including copper-orange and red, rich-red, yellow and scarlet. Bushy habit with lots of short stemmed flowers over a long period. Frost hardy. Early sowing recommended.

Height: 15-20cm (6-8in)

More info
    • 1 packet (35 calceolaria seeds)

    • Despatch: Within 1 days
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    • £0.99

Arum Lily

Zantedeschia aethiopica, Calla Lily

A soothing sight by the waterside, in moist borders or large containers. These robust plants produce glossy foliage shooting like arrows from the base, then from late spring to mid-summer, the beautiful, pure white Arum Lily blooms become a sparkling attraction. Hardy with dry mulch winter protection. More info
    • 1 packet (20 arum seeds)

    • Despatch: Within 1 days
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    • £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
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    • £0.99

Streptocarpus x hybridus 'Dibley's Dragon Mixed' F1 Hybrid

Cape Primrose

T&M are delighted to be able to offer this spectacular mixture. Dragon Mixed is a high quality uniform mixture in a wide range of exciting and unique colours and patterns. Bred by Streptocarpus specialist and RHS Gold medal winners Dibley's Nurseries. More info
    • 1 packet (25 streptocarpus seeds)

    • Despatch: Within 1 days
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    • £2.29

Meconopsis baileyi 'Alba'

Himalayan Poppy, Tibetan Poppy, Meconopsis betonicifolia

  • Rare white Himalayan poppy
Rarely seen, this stunning white form of the Himalayan blue poppy is a real eye-catcher in late spring and early summer. Pure white, silky petals surround golden yellow stamens to form clear, single blooms up to 10cm (4") across. Forming a basal rosette of hairy leaves, Meconopsis baileyi 'Alba' thrives in cool, moist, shady borders and woodland gardens, making a stunning feature when planted en masse. This captivating short-lived perennial is 99% true to type; very occasionally the odd blue flower may appear. Height: 90cm (35"). Spread: 50cm (20").
More info
    • 1 packet (30 meconopsis seeds)

    • Despatch: Within 1 days
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    • £2.69

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:
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    • £0.99
    • Out of stock

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

Geranium 'Maverick Mixed' F1 Hybrid

Pelargonium, Zonal Geranium, Zonal Pelargonium

Introducing in T&M's opinion, the ultimate top quality garden Geranium. In trials, they are clear winners with outstanding garden performance. Uniform, well-branched, lush foliaged plants bearing multiple stemmed large flowers, perfect in shape and shatter free. The mixture contains 8 colours: white, coral, star, scarlet, pink, salmon, red and light salmon. Makes an ideal pot plant. Flowers can be edible.
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
    •  
    • £1.49 £0.99

Mimulus x hybridus 'Mystic Mixed' F1 Hybrid

Diplacus, Monkey Flower, Musk

 Customer Rating
Mimulus are versatile bedding plants for full sun or part shade. The Mystic Mixed is quick to flower and perfect for use in bedding, borders and containers. This exclusive blend covers a wide colour range and includes spotted blooms. Height: 15-23cm (6-9in).
More info
    • 1 packet (40 mimulus seeds)

    • Despatch: Within 1 days
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    • £0.99

Geranium 'Summer Showers Burgundy'

Pelargonium peltatum, Ivy-leaved Geranium, Ivy-leaved Pelargonium

Presenting the first burgundy flowered ivy geranium, true from seed! Grown in containers, baskets or bedding even in hot weather - the strong, well branched, non interlocking plants hold six to eight large florets.
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