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.



We have found 19 products.
 

Monarda didyma 'Cranberry Lace' (Large Plant)

Bergamot

Bergamot are unusual-looking perennials that have aromatic foliage and whorls of spidery blooms made up of tubular petals. Monarda 'Cranberry Lace' is a compact, short Bergamot with bright pink, and a built-in resistance to powdery mildew problems.

Bergamot is perfect for cottage garden borders where it can quickly form dense, easy to grow clumps. Bergamot flowers are great for the wildlife garden, as they are loved by bees. Height: 90 cm (36"). Spread: 45cm (18").


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

More info
    • 1 x 1 litre potted monarda plant

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

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 siberica 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 October 2015
    •  
    • £12.99

Arum Lily (Large Plant)

Zantedeschia aethiopica, Calla Lily

Grow the classic Arum Lily in your own garden; plants are suitable for moist borders or large patio pots. The architectural foliage is joined by unusual hooded flowers, which are up to 15cm (6") in length.

Zantedeschia can be grown at the edge of ponds, or in soil that is consistently moist. The Arum Lily will flower from early summer, and is a hardy perennial in most areas of the UK. Height: 90cm (36"). Spread: 60cm (24").

More info
    • 1 x 3 litre potted arum lily plant

    • Despatch:
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    • £11.99
    • Out of stock
    • 2 x 3 litre potted arum lily plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

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
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    • £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 July 2015
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    • £12.99
    • 2 x 2 litre potted lupinus plants

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

    • Despatch: By end of August 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 July 2015
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    • £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: By end of August 2015
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    • £9.99
    • 2 x 1 litre anemone potted plants

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

Agapanthus 'Jacaranda' (Large Plant)

African Blue Lily

Agapanthus 'Jacaranda' is a particularly early flowering variety. Blooming from as early as June, the showy umbels of blue flowers are beautifully striped with deeper blue. This African Blue Lily adds a dramatic vertical presence to herbaceous borders, where its sturdy upright stems will rise to create a lovely focal point. The linear, evergreen foliage forms neat clumps that make good ground cover when planted in large swathes. This reliable hardy perennial copes in most soils, and enjoys a sunny spot. Height: 90cm (36"). Spread: 50cm (20"). More info
    • 1 x 3 litre potted agapanthus plant

    • Despatch: By end of July 2015
    •  
    • £17.99
    • 2 x 3 litre potted agapanthus plants

    • Despatch: By end of July 2015
    •  
    • £27.99

Hosta 'Blue Angel' (Large Plant)

Plantain Lily

The largest of the blue Hostas, this slow growing hardy perennial forms large clumps of glaucous grey-blue leaves that can each grow up to 40cm (16") long. The enormous leaves provide an ideal backdrop for its bell shaped, white flowers throughout June. Hosta 'Blue Angel' is a well known cultivar with an RHS AGM for its excellent garden performance. A choice specimen plant that will transform a damp, shady corner of the garden. Height: 90cm (36"). Spread: 120cm (48"). More info
    • 1 x 2 litre potted hosta plant

    • Despatch: By end of July 2015
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    • £13.99
    • 2 x 2 litre potted hosta plants

    • Despatch: By end of July 2015
    •  
    • £21.99