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 72 products.
 

Heuchera 'Patchwork' Mix

Coral Flower, Coral Bells

 Customer Rating
Sprays of delicate, tiny flowers float on wiry stems above neat mounds of vibrant foliage. Prized for their colourful leaves, these versatile semi-evergreen perennials make excellent drifts of ground cover, adding a distinctive splash of colour to the front of borders, or even brightening winter containers. Their airy blooms attract bees and are also useful as cut flowers. Height and spread: 40cm (16").
More info
    • 3 heuchera Postiplugs

    • Despatch: By end of September 2015
    • + FREE £5 voucher  
    • £8.99
    • 6 heuchera Postiplugs

    • Despatch: By end of September 2015
    • + FREE £5 voucher  
    • £12.99

Iris 'Re-Blooming Collection'

Bearded Iris

 Customer Rating

A beautiful selection of hardy, drought tolerant bearded iris with exceptional disease and insect resistance. With the first flowers appearing in spring, and a second flush in autumn, these really are outstanding hardy perennials; perfect for summer borders. These majestic, tall bearded iris flowers have a delicate scent and make impressive cut flowers for a vase indoors. Height: 90cm (36"). Spread: 30cm (12").


  • Collection comprises:
  • Iris 'Orange Harvest' - Rust orange flowers.
  • Iris 'Victoria Falls' - Light blue iris flowers.
  • Iris 'Cantina' - Violet blooms.
  • Iris 'Buckwheat' - Golden yellow petals.
  • Iris 'Pass the Wine' - Wine red flowers.
More info
    • 5 Iris rhizomes - 1 of each variety

    • Despatch: By end of September 2015
    •  
    • £14.99
    • 10 Iris rhizomes - 2 of each variety

    • Despatch: By end of September 2015
    •  
    • £24.99

Foxglove 'Dalmatian Mixed'

Digitalis purpurea

Digitalis 'Dalmatian Mixed' looks magnificent in cottage gardens and woodland borders - but thanks to their uniform branching habit, these statuesque foxgloves make fabulous annual bedding too! These short lived perennials will happily seed about to create dramatic drifts and attract wildlife to their nectar rich flowers. Height: 50cm (20"). Spread: 40cm (16").

Useful links:

Gardening news: Move over marigolds... new bedding plants fly in the face of tradition

More info
    • 6 foxglove plug plants

    • Despatch: By end of September 2015
    •  
    • £5.99
    • 24 foxglove plug plants

    • Despatch:
    •  
    • £12.99
    • Out of stock

Penstemon 'Wedding Bells' Mixed

 Customer Rating
Penstemon cobaea 'Wedding Bells' (also known as Orchestra Mixed) combines some of the best penstemons from T&M's own breeding programme. Satin, bell-shaped flowers in a variety of bright colours and patterns are carried over a particularly long flowering period, above glossy, semi-evergreen foliage. A fantastic alternative to Antirrhinums (snapdragons) in annual bedding schemes, these compact penstemon plants boast large flowers and superb weather resistance. Easy to maintain, these hardy perennials are also attractive to bees. Height: 50cm (18"). Spread: 45cm (18").

Useful links:

Gardening news: Move over marigolds... new bedding plants fly in the face of tradition

More info
    • 24 penstemon plug plants

    • Despatch: By end of October 2015
    •  
    • £9.99
    • 48 penstemon plug plants

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

Dianthus 'Doris'

Carnation, Pink

This well known RHS AGM variety is one of the longest flowering Pinks you'll find. An abundance of double pink flowers with deep pink centres are produced all summer long, above mats of silvery green foliage. With a rich, sweet fragrance, Dianthus 'Doris makes a delightful cut flower that will fill your home with fragrance. This compact hardy perennial is perfect for alpine gardens and rockeries or planted through the front of beds and borders. Height and spread: 25cm (10").


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

More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 10 dianthus Postiplug plants

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

Dianthus 'Ever-blooming Mixed' (Hardy)

Carnation

Strong upright stems carry large ruffled blooms in a vibrant mix of red, orange, yellow and pink carnations. These hardy perennial dianthus are cottage garden essentials. The fragrant carnation flowers are excellent for cutting for a bright display indoors. Perfectly proportioned for the front of sunny borders where their mounds of silvery green foliage remain evergreen throughout the year. Height: 60cm (24"). Spread: 40cm (16").

 

Culinary note: Dianthus flowers are edible.

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

More info
    • 6 dianthus plug plants

    • Despatch: By end of September 2015
    •  
    • £5.99
    • 36 dianthus plug plants

    • Despatch:
    •  
    • £10.99
    • Out of stock
    • 72 dianthus plug plants

    • Despatch: By end of September 2015
    • Double up 36 to 72 for £5 extra  
    • £15.99

Aster 'Ann Leys'

  • New in 2015
Crested purple-green flowers set this brand new aster apart from the crowd. New to the gardener, this florist's favourite is a highly sought after cut flower across Europe. For home gardeners it is invaluable as late season perennial, flowering right through September and October on stems up to 70cm tall - you'll find it hard to leave any on the plant when you see how they perform as a cut flower! Add Aster 'Ann Leys'to the border or set in a patio pot for years of autumn colour. Height 75cm (30"). Spread 40cm (16").
More info
    • 1 bare root aster plant

    • Despatch: By end of November 2015
    •  
    • £8.99
    • 2 bare root aster plants

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

Echinacea 'Cheyenne Spirit Mixed'

Coneflower

  • The first cone flower for bedding plants
This colourful coneflower has a super branching habit that produces many more flowers per plant than other varieties. Its free flowering habit makes Echinacea 'Cheyenne Spirit Mixed' ideal as an unusual bedding plant. This vibrant mix contains a range of sought after colours for a really dazzling display. Like all coneflowers, these Echinacea are also ideal for growing in wildlife gardens and coastal positions. The flowers are great for cutting too! Height: 50cm (20"). Spread: 40cm (16").
More info
    • 12 echinacea plug plants

    • Despatch:
    •  
    • £10.99
    • Out of stock
    • 24 echinacea plug plants

    • Despatch:
    •  
    • £16.99
    • Out of stock
    • 48 echinacea plug plants

    • Despatch:
    •  
    • £21.99
    • Out of stock

Eryngium 'Neptune's Gold'

Sea Holly

  • New in 2015
The plant everyone's talking about! Eryingium 'Neptune's Gold' is the kind of breeding breakthrough that doesn't come along every day; a true colour break - the world's first golden Sea Holly! Selected in Wales from a batch of seedlings, this unique specimen still retains the iconic blue flower tones of Eryngium, but also takes on a stunning golden sheen - just like Neptune's crown! This superb perennial was Voted Best New Product at the recent Grower of the Year awards 2015. Height: 50cm (20"). Spread: 40cm (16").
More info
    • 1 x 9cm potted eryngium plant

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 2 x 9cm potted eryngium plants

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

Gerbera 'Sweet Glow'

Barberton Daisy, Transvaal Daisy

  • T&M exclusive
  • Bigger and better winter hardy gerberas
  • Three seasons of stunning colour
Growing Gerberas outdoors was virtually inconceivable ten years ago. Now these 2nd generation hardy Gerberas can be grown year round in the border! Gerbera 'Sweet Glow' produces plenty of bright orange daisy blooms that are twice the size of other hardy Gerberas, and make fabulous cut flowers. Blooming reliably from June to October, these wonderful clump forming hardy perennials make a big impact in borders and patio containers. Height and spread: 45cm (18").
More info
    • 1 x 7cm potted gerbera plant

    • Despatch: By end of September 2015
    • SAVE £2  
    • £9.99 £7.99

Dianthus 'Gran's Favourite'

Carnation, Pink

This well loved RHS AGM variety is as popular as ever for its white blooms with raspberry picotee edges. The clove scented flowers of Dianthus 'Gran's Favourite' are produced in abundance above a carpet of silvery green foliage. With such a prolific flowering period there will be plenty of blooms to spare for a vase indoors. This super little Pink is perfectly hardy and a makes a lovely addition to the front of cottage garden borders. Height and spread: 40cm (16").


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

More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 10 dianthus Postiplug plants

    • Despatch: By end of September 2015
    • SAVE £4.99  
    • £19.98 £14.99

Gerbera 'Sweet Collection' (Hardy)

Barberton Daisy, Transvaal Daisy

 Customer Rating
  • Bigger and better winter hardy gerberas
  • Three seasons of stunning colour
Growing Gerberas outdoors was virtually inconceivable ten years ago. Now these 2nd generation hardy Gerberas can be grown year round in the border! Gerbera 'Sweet Collection' produces plenty of classic daisy blooms that are twice the size of other hardy Gerberas, and make fabulous cut flowers. Blooming reliably from June to October, these wonderful clump forming hardy perennials make a big impact in borders and patio containers. Height and spread: 45cm (18").
More info
    • 3 x 7cm potted gerbera plants (1 of each variety)

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