Thompson & Morgan

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Perennial & Biennial Plants


In this range you'll find an impressive selection of perennial plants and biennial plants, which are perfect for beginners and experienced gardeners alike. Also known as herbaceous plants, perennial plants live for 2 or more years and flower every year. Biennial plants live for up to 2 years, flowering profusely in their second year before setting seed and dying. Both are great for beds and spring displays and there are many delightful plants to choose from. Use the selections in the left menu to select the right plants for your garden.


For beautiful summer flowers browse our range of annual plants.



We have found 34 products.
 

Iris sibirica Collection

  • New in 2015

The breeding behind our unique iris collection brings more grace and beauty to this cottage garden favourite than ever before. Four exclusive varieties, all enhanced with crested double iris flowers for extra elegance and a frenzy of summer colour in your borders. Each flower has in excess of 20 petals, bringing a rose-like appearance to the luxuriant blooms. Iris sibirica Collection are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14").


  • Collection comprises:
  • Iris 'Imperial Opal' - Translucent lavender-pink blooms with light edging and white throat.
  • Iris 'Pink Parfait' - Soft lavender-pink blooms with lighter edging. A yellow centre with white halo can be seen as flowers open fully.
  • Iris 'Concord Crush' - Rich violet-blue blooms with gold and white central blaze.
More info
    • 3 bare root iris plants - 1 of each variety

    • Despatch: By end of November 2015
    •  
    • £12.99

Peony 'Eden's Perfume'

Paeonia, Herbaceous Peony

Said to be the most fragrant peony ever! Large pink, layered blooms with a powerful scent of roses, and layer upon layer of sublime, shell pink petals. Herbaceous peonies are a real feature of the border producing exotic, elegant blooms from early summer onwards which are superb for cutting. Peonies are hardy, long lived and cope well on heavier soils, provided that they are well drained. Height: 90cm (36"). Spread: 60cm (24"). More info
    • 1 bare root peony plant

    • Despatch: By end of November 2015
    •  
    • £14.99

Iris 'Concord Crush'

Iris sibirica

  • New in 2015
Iris 'Concord Crush' sports heavily petalled, elegant violet-blue flowers with a deeply ruffled form. Iris sibirica are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14").
More info
    • 1 bare root iris plant

    • Despatch: By end of November 2015
    •  
    • £6.99

Echinacea purpurea 'Rubinstern' (Large Plant)

Coneflower

Cone Flowers are much loved by bees and butterflies when grown in the garden, so are a common choice for wildlife gardening. The clump-forming plants work well in cottage garden borders, and will flower for a long period. Echincea 'Rubinstern' is particularly recommended, thanks to its rich pink, daisy-like flowers, which can be up to 12cm (5") wide. Height: 90cm (36"). Spread 50cm (20").

More info
    • 1 x 1 litre potted echinacea plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted echinacea plants

    • Despatch: By end of September 2015
    •  
    • £16.99

Lupin 'Noble Maiden' (Large Plant)

Lupinus

No cottage garden would be complete without the well loved Lupin, and this one is stunning in its simplicity. Tall spires of snow white blooms rise above clumps of palmate foliage in early summer. Lupin 'Noble Maiden' makes a particularly effective choice for brightening dappled shade in woodlands, where its pale flowers appear luminescent. Height: 90cm (36"). Spread: 75cm (30"). More info
    • 1 x 2 litre potted lupinus plant

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 2 x 2 litre potted lupinus plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Geranium 'Double Flowered Collection'

Hardy Geranium, Cranesbill

Enjoy our selection of the very best double-flowered cranesbills. Every bloom is a pretty posy of vibrant colour and unlike their single flowered relations, these hardy geraniums won't self seed, so the flowers last even longer. These cottage garden favourites will quickly blend with other herbaceous perennials to create colourful groundcover, and look equally attractive in borders or containers. Height: Up to 90cm (36"). Spread: 60cm (24").
  • Collection comprises 1 plant each of:
  • Geranium himalayense 'Birch Double' (left) - Vigorous and versatile, this superb cranesbill tolerates almost any situation; even full shade.
  • Geranium pratense 'Laura' (bottom right) - Long lasting, weather resistant, double white flowers are produced from June onwards on upright, downy stems.
  • Geranium pratense 'Summer Skies' (top right) - The double blooms of Geranium pratense 'Summer Skies' may look delicate but this hardy herbaceous perennial is tough and undemanding.
More info
    • 3 bare root geranium plants - 1 of each variety

    • Despatch: By end of November 2015
    • SAVE £19.98  
    • £38.97 £18.99
    • 6 bare root geranium plants - 2 of each variety

    • Despatch: By end of November 2015
    • SAVE £48.95  
    • £77.94 £28.99

Aster novi-belgii 'Karminkuppel' (Large Plant)

Michaelmas Daisy, New York Aster

The Michaelmas Daisy is a classic late summer and autumn hardy perennial. Blooms of Aster novi-belgii 'Karminkuppel' are richly double, in the most glorious magenta pink, and produced in a flurry, extending the summer party in your garden.

Michaelmas Daisies are perfect for the cottage garden; they're such a quintessentially English plant. Easy to establish and lasting for many years in the garden. Height: 90cm (36"). Spread: 50cm (19").

More info
    • 1 x 1 litre potted aster plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted aster plants

    • Despatch: By end of September 2015
    •  
    • £16.99

Penstemon 'Amelia Jayne'

Phenomenal stamina and indifference to rain and drought means that Penstemon 'Amelia Jayne' will flower each year for an incredible five months. Mesmerising, red bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. Height: 90cm (36"). Spread: 45cm (18").
More info
    • 3 penstemon Postiplug plants

    • Despatch: By end of September 2015
    •  
    • £9.99

Anemone tomentosa 'Serenade' (Large Plant)

Anemone vitifolia

This charming Anemone makes a tall, herbaceous perennial with generous amounts of late summer blooms, often lasting well into the autumn. The flowers of Anemone tomentosa 'Serenade'are candy pink, and unusually semi-double, with 2 rows of soft petals.

Japanese Anemones are excellent garden plants, which are ideal for beginners. Once established, plants will last for years in the garden, with very little effort. Plants are also extremely rabbit resistant. Height and Spread: 90cm (35").

More info
    • 1 x 1 litre anemone potted plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1 litre anemone potted plants

    • Despatch:
    •  
    • £16.99
    • Out of stock

Iris 'Pink Parfait'

Iris sibirica

  • New in 2015
Iris 'Pink Parfait' produces soft lavender-pink blooms with lighter edging. As the flowers open fully, a yellow centre with a white halo can be seen. Iris sibirica are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14").
More info
    • 1 bare root iris plant

    • Despatch: By end of November 2015
    •  
    • £6.99

Geranium pratense 'Summer Skies'

Hardy Geranium, Meadow Cranesbill

Plant swathes of this gorgeous mauve-pink geranium in your cottage garden borders and enjoy dreamy summer skies all summer long. The double blooms of Geranium pratense 'Summer Skies' may look delicate but this hardy herbaceous perennial is tough and undemanding. Unlike its single flowered relations, this meadow cranesbill does not self seed, so the flowers last even longer. Height: 90cm (36"). Spread: 60cm (24").
More info
    • 1 bare root geranium plant

    • Despatch: By end of November 2015
    •  
    • £12.99

Lythrum salicaria 'Robin' (Large Plant)

Purple Loosestrife

Purple Loosestrife is an easy to grow, hardy perennial for moist borders in full sun. Lythrum salicaria 'Robin' can be extremely long-flowering, with upright flower spikes from late spring to late summer.

Lythrum plants are showy and robust, with magenta pink flowers and are excellent for cottage garden borders. They offer unrivalled summer colour. Height: 90cm (36"). Spread: 45cm (18").

More info
    • 1 x 1 litre potted lythrum plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted lythrum plants

    • Despatch: By end of September 2015
    •  
    • £16.99