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 20 products.
 

Peony 'Eden's Perfume'

Paeonia

  • Best in Class for border peonies
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").

Useful links:

How to plant peonies

More info
    • 1 bare root plant

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

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 plants - 1 of each variety

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

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

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 September 2015
    •  
    • £12.99

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 plant

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

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

Oenothera fruticosa 'African Sun' (Large Plant)

Oenothera linearis, Evening Primrose, Sundrops

The golden flowers of Evening Primrose are eye-catching and long-lasting. Oenothera is a reliable, tough, hardy perennial which will grow almost anywhere, even thriving on neglect.

Oenothera ‘African Sun’ is a special plant, with a rounded, compact habit. These mounded plants are excellent in borders, summer patio containers or bedding schemes. The golden blooms are also open all through the day, unlike other Evening Primrose strains. Height: 90cm (36"). Spread: 30cm (12").

More info
    • 1 x 1 litre potted plant

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

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 plant

    • Despatch: By end of June 2015
    •  
    • £11.99
    • 2 x 3 litre potted plants

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

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 plant

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

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 plant

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

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

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 plant

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

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

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 potted anemone plant

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

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

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 June 2015
    •  
    • £9.99
    • 2 x 1 litre potted aster plants

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

Perennial Ground Cover Collection

  • New in 2015

Our ground cover collection of hardy herbaceous perennials brings so many benefits, which all lead to one thing: low maintenance gardening. We've selected some of our best low-growing perennials to offer a range of planting solutions. Use them as front of border plants in large sunny borders or set them in dappled shade as underplanting to trees and shrubs. You can even try them in pots and use your new perennial containers alongside seasonal pots. Every plant in the mix offers a controlled spreading habit, helping to quickly fill borders, cover soils and prevent weeds taking hold. And less weeding leads to more time spent enjoying your garden!


  • Perennial Ground Cover Collection comprises:
  • Arabis 'Lotti Pink' - A spring flowering, cushion-like perennial.
  • Armeria 'Ballerina Mixed' - Dense cushions of bright green foliage produce spherical flower heads set atop sturdy upright stems.
  • Dianthus deltoides 'Red' - Neat clumps of silver green foliage that makes stunning ground cover.
  • Campanula 'Dwarf Blue' - Cushion-like plants, which are smothered in violet-blue flowers through the summer months.
  • Aubrieta 'Mixed' - These tough little plants will thrive in the poorest of soils, forming dense mats of evergreen foliage.
  • Erigeron 'Stallone' - This cheery clump forming perennial enjoys light sandy soils, making it ideal for coastal gardens.

Powerliner® plugs are well established, mature plugs which can be potted on or can be planted straight into the border or containers. Each plug module is 6.5cm in diameter.
More info
    • 6 Powerliner plug plants - 1 of each variety

    • Despatch: By end of September 2015
    •  
    • £8.99
    • 12 Powerliner plug plants - 2 of each variety

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