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 16 products.
 

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.
More info
    • 1 packet (40 seeds)

    • Despatch: Within 3 days
    •  
    • £3.49

Echium pininana

Tower of Jewels, Giant Viper's Bugloss, Tree Echium, Echium pinnifolium

 Customer Rating

No wonder this is also called Tower of Jewels or 'Pride of Tenerife! Exceptionally tall flower spikes packed with either rose or purple-blue flowers, interspersed with silver-green lanceolate leaves.

More info
    • 1 packet (25 seeds)

    • Despatch: Within 3 days
    •  
    • £3.99

Eryngium giganteum 'Miss Willmott's Ghost'

Eryngium giganteum, Sea Holly

A highly ornate border plant with heart-shaped basal foliage from which rise stems of many decorative steel-blue cones surrounded by a collar of prickly, scalloped leaves. During the summer the foliage transforms from mid green to silvery-grey. Wonderful for dried arrangements, especially at Christmas. Plants can be short lived but often self seed before dying. Height: 90-100cm (36-40in).
More info
    • 1 packet (30 seeds)

    • Despatch: Within 3 days
    •  
    • £2.29

Lysimachia ephemerum

Loosestrife

Probably one of the best species with silver lanceolate foliage and stems. The flower spikes contain many small white flowers, gently veined in mauve. A choice perennial from Spain, and an unusual cut flower too. Height: 60-120cm (3-4ft). More info
    • 1 packet (50 seeds)

    • Despatch: Within 3 days
    •  
    • £1.49

Verbascum x hybrida 'Copper Rose' F1 Hybrid

Mullein, Celsia

The robust plants are actually incapable of setting viable seed, so we must offer seed which has been pollinated meticulously by hand between the two parent plants. As with most F1 Hybrids, special factors are tremendous vigour and a plant that just keeps on flowering, as it tries to produce seed which it cannot do. The gorgeous silky, large blooms will smother the soft, silver stems which reach up to 3ft. A great range of fashionable and delicious colours - ranging from copper to buff, apricot, old rose, tan and other lovely blends, all bursting from the contrasting silvery-grey flower spikes and buds. Sown in January/February they will easily flower during the summer of their first year, and if cut back will often re-bloom. An excellent performer. More info
    • 1 packet (10 seeds)

    • Despatch: Within 3 days
    •  
    • £5.99

Nepeta cataria

Catmint, Catnip

No cat should be deprived of this! Their reaction to the aromatic silver grey foliage is fascinating. Flower spikes of violet spotted white.

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 1 packet (225 seeds)

    • Despatch: By end of August 2014
    •  
    • £2.99

Cynara cardunculus

Cardoon

 Customer Rating
The ripening seed heads of Cynara cardunculus are a fantastic combination of bronzes and golds. The stems are thick and sturdy, the foliage is large, serrated and silver and in its own right presents an imposing border plant for most of the year.
More info
    • 1 packet (18 seeds)

    • Despatch: Within 3 days
    •  
    • £1.49

Agastache foeniculum

Anise Hyssop, Agastache anisata, Agastache anethiodora

Silvery-green foliage which is scented unmistakenly of Aniseed. Flower spikes of blue appear during summer. Bees, butterflies and goldfinches love it!

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 1 packet (60 seeds)

    • Despatch: Within 3 days
    •  
    • £2.49

Agastache aurantiaca 'Fragrant Mixed'

Hummingbird Mint

Dense spikes of tasselled, tubular flowers erupt above neat clumps of aromatic foliage. The tall, airy flower spikes make a lovely addition to cottage garden borders where they will attract insects to their dainty blooms.Colourful Agastache aurantiaca 'Fragrant Mixed' is quick and easy to grow, flowering in its first year from sowing - perfect for filling summer containers and plugging gaps in beds and borders! Height: 60cm (24"). Spread: 30cm (12").
More info
    • 1 packet (60 seeds)

    • Despatch: Within 3 days
    •  
    • £2.49

Agastache aurantiaca 'Apricot Sprite'

Hummingbird Mint

Tubular blooms of apricot orange form dense flower spikes above clumps of silvery green, richly aromatic foliage. Agastache aurantiaca 'Apricot Sprite' is compact and quick growing - the perfect choice for beds and containers or filling gaps in borders. Bred and selected by T&M, this free flowering, half hardy perennial has been awarded a Fleuroselect Quality Mark. All this, and it also flowers in its first year from seed! Height: 45cm (18"). Spread: 30cm (12").
More info
    • 1 packet (30 seeds)

    • Despatch: Within 3 days
    •  
    • £2.89

Verbascum bombyciferum 'Silver Lining'

Broussa Mullein, Celsia

Silver leaves, erect fleecy silver stems, heavily studded with cool yellow flowers.

More info
    • 1 packet (500 seeds)

    • Despatch: Within 3 days
    •  
    • £1.49

Helianthemum Collection

Rock Rose, Sun Rose

Showy dwarf evergreen shrubs which spread quickly over rocks and slopes and make ideal ground cover. The attractive foliage is smothered from late spring with masses of 2.5cm (1 inch) flowers resembling wild roses in pink, lemon, copper, red, purple and white. They love the sun and stand hot, dry conditions very well. Height: 9-12 inches.
More info
    • 1 packet (250 seeds)

    • Despatch: Within 3 days
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    • £2.19