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 239 products.
 

Perennial 'Best Value' Collection

 Customer Rating

Fill your beds and borders with this bargain collection of herbaceous perennials. Perennial plants bloom year after year, and many can also be cut and brought into the house for beautiful flower arrangements. Height: Up to 1m (39"). Spread: 45cm (18").

  • Collection includes;

  • Lavender 'Munstead' - This neat, compact variety of English lavender bears masses of dark purple-blue flower spikes. Height: 45cm (18"). Spread: 60cm (24").
  • Digitalis 'Dalmation Mixed' - Well branched, compact, dwarf plants. Height: 50cm (20"). Spread: 40cm (16").
  • Echinacea 'Primadonna' - Beautiful pink daisy flowers with petals that radiate outwards instead of downwards. Height: 85cm (33"). Spread: 45cm (18").
  • Coreopsis 'Presto' - Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long. Height and spread: 45cm (18").
  • Verbena Bonariensis - Tightly clustered florets form glowing lavender flower heads that float atop stiffly upright, branching stems. Height: 200cm (78"). Spread: 45cm (18").
  • Scabiosa 'Blue Jeans' - Blue pincushion flowers attract bees and butterflies throughout summer. Height and spread: 45cm (18").
  • Aquilegia 'Swan' Mixed - An abundance of large flowers on upright, multi-branched stems Height: 30cm (12"). Spread: 25cm (10").
  • Geum 'Blazing Sunset' - Fully double, large scarlet blooms are borne over a long period in summer. Height and spread: 60cm (24").
  • Carnation 'Ever-blooming Mixed' (Hardy) - Richly fragrant blooms that are ideal for cutting. Height and spread: 30cm (12").
  • Armeria 'Mixed' - Long flowering plants with unusual ball shaped flower heads on thin wiry stems. Height: 50cm (20"). Spread: 30cm (12").
  • Delphinium 'Pacific Giants' - Excellent for adding structure and presence to the back of borders. Height: 150cm (60"). Spread: 75cm (30").
  • Leucanthemum x superbum 'White Knight' - Pure white single flowers are produced in constant supply throughout summer.
More info
    • 72 plug plants - 6 of each variety

    • Despatch: By end of May 2015
    • SAVE £39.89  
    • £59.88 £19.99

Giant Fragrant Cowslip

Primula florindae, Tibetan Cowslip

Stiff stems carry whorls of sulphur yellow, tubular, flowers with a delicate, sweet fragrance. Once established, Giant Cowslips will naturalise to form swathes of lush, mid green foliage that makes ideal groundcover for natural planting schemes. With an RHS AGM, Primula florindae makes a superb choice for a damp, shady corner where other plants won't grow. Height: 90cm (35?). Spread: 50cm (20?).
More info
    • 3 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £12.99
    • 6 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £17.99

Hellebore 'Washfield Doubles'

Helleborus x hybridus

 Customer Rating

Breathtaking, double-flowered hellebores from the 'Washfield' collection that are bred to perfection. Intriguing colours, patterns, flecks and ruffles are a sheer delight during the cold months of winter and early spring, while their leathery palmate foliage has an evergreen presence all year round. These delightful doubles come in a wide colour range including yellows, greens, blacks, reds, apricots and many other shades. Height and spread: 40cm (16").

More info
    • 5 jumbo plug plants

    • Despatch: By end of March 2015
    •  
    • £13.99
    • 10 jumbo plug plants

    • Despatch: By end of March 2015
    •  
    • £18.99

Geranium 'Jackpot Mixed' F1 Hybrid

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • Stunning blooms will last all summer
These weather tolerant, F1 hybrid pelargoniums have more than enough vigour to ensure a spectacular, free flowering display throughout summer. Geranium 'Jackpot Mixed' produce masses of colourful single blooms on neat compact plants. Perfect for filling beds, borders and patio containers. Height: 40cm (16"). Spread: 35cm (14").
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 36 plug plants

    • Despatch: By end of April 2015
    •  
    • £7.99
    • 72 plug plants

    • Despatch: By end of April 2015
    • SAVE £2.99  
    • £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 rhizomes (1 of each variety)

    • Despatch: By end of March 2015
    • SAVE £28.96  
    • £44.95 £15.99
    • 10 rhizomes (2 of each variety)

    • Despatch: By end of March 2015
    • SAVE £69.91  
    • £89.90 £19.99

Geranium 'Appleblossom Rosebud'

Pelargonium, Zonal Geranium, Zonal Pelargonium

  • 18 weeks of beautiful rosebud flowers
Captivating rosebud blooms open to reveal large, bicoloured clusters of fully double, pink and white flowers. This delightful zonal geranium has retained its popularity since the Victorian age and remains admired and sought after today. The long flowering period and drought tolerance of Geranium ‘Appleblossom’ make it ideal for creating an enchanting display in borders and patio containers that will last well into autumn. Height: 40cm (16”). Spread: 25cm (10”).
More info
    • 1 x 10.5cm potted plant

    • Despatch: By end of April 2015
    •  
    • £9.99
    • 3 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £12.99
    • 3 x 10.5cm potted plants

    • Despatch: By end of April 2015
    •  
    • £19.99
    • 6 jumbo plug plants

    • Despatch: By end of April 2015
    • SAVE £7.99  
    • £25.98 £17.99

Wallflower 'Dwarf Scented Mixed'

Erysimum, Cheiranthus

Sometimes the old methods are the best, and that’s exactly why we’ve added good, old fashioned bareroot wallflower plants to our range. Wallflower ‘Dwarf scented Mixed’ can be planted straight out into beds, containers and borders to create a fantastic tapestry of scented colour in the following spring. Tough, compact and reliable - this short lived perennial is tough enough to cope in even the poorest of soils. Height: 40cm (16"). Spread: 30cm (12"). More info
    • 20 bare root plants

    • Despatch: By end of October 2015
    •  
    • £9.99
    • 40 bare root plants

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

Most Scented Bumper Pack

Treat yourself to this fantastic bumper pack of the most scented bedding and border plants, and save yourself £££s! These great value perennials will fill your garden with fragrance and colour in a fabulous springtime display. You'll receive 12 plug plants of each of the following varieties - that's 72 plug plants in total! Height and spread: Up to 30cm (12").

  • Most Scented Bumper Pack comprises 12 plug plants each of:
  • Primrose 'World's Most Scented Mix' - Let the sweet citrus scent and the fresh colour mix of these reliable perennials transport you into spring.
  • Viola 'Most Scented' Mix - This exclusive blend exudes a spring-like perfume even on the coolest of winter days.
  • Stocks 'Most Scented' Mix - Specially selected for their strong and spicy fragrance and fabulous colours!
  • Pansy 'Most Scented' Mix - Larger than violas, with a cheery bright colour mix that will continue well into late spring.
  • Polyanthus 'Most Scented' Mix - Plenty of scented flowers on short, stocky stems, above neat rosettes of lush foliage.
  • Wallflower 'Most Scented' Mix - Versatile and undemanding, this tough perennial can cope in even the poorest of soils.
More info
    • 72 plug plants - 12 of each variety

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

Foxglove 'Illumination Pink'

Digitalis

 Customer Rating
  • Winner of Plant of the Year 2012 - RHS Chelsea Flower Show, Best new product at the Anglian Business Awards, Best new product at the Garden Retail awards
  • T&M's own breeding

Thought to be an impossible hybridisation, this is the most spectacular foxglove you will have ever seen! Parentage from the little-known Isoplexis (Canary Island Foxglove) gives this exciting new Digitalis its fabulous tropical colouring. Being completely sterile Foxglove ‘Illumination’ won’t set seed, giving it an incredibly long flowering period. Unlike most foxgloves which are generally biennial, this half-hardy semi-evergreen is a true perennial so you will be able to enjoy its flowers for years to come. The exotic looking blooms are densely packed on sturdy stems, with many side branches, making a striking addition to summer borders. Height: 90cm (36"). Spread: 45cm (18").

Useful links:

'Impossible' Foxglove named Plant of the Year at RHS Chelsea Flower Show
Gardening news: Top 10 best-selling plants of 2012
Read Michael Perry's blog: Futuristic Foxgloves

More info
    • 1 x 9cm potted plant

    • Despatch: By end of March 2015
    •  
    • £9.99
    • 3 x 9cm potted plant

    • Despatch: By end of March 2015
    • SAVE £9.99  
    • £29.97 £19.98

Hellebore 'White Spotted'

  • The very best hellebores that money can buy

Exquisite cup shaped, spotted pink blooms with a pure white edge appear like jewels in dull winter borders. Hellebore ‘White Spotted’ is the essential low maintenance plant for any difficult, shady border where they will form clumps of leathery evergreen foliage for a year round garden presence. These resilient hardy perennials are vigorous and long lived, lasting for 20 years or more. Height and spread: 45cm (18").



Thompson & Morgan inherited the highly-commended hellebore breeding programme of Elizabeth Strangman when she retired and we are immensely proud to carry on her legacy, perfecting the amazing colours and forms of this wonderful perennial.
More info
    • 1 x 9cm potted plant

    • Despatch:
    •  
    • £13.99
    • Out of stock

Hellebore 'Yellow Spotted'

  • The very best hellebores that money can buy

Exquisite cup shaped, pale gold blooms with purple pink markings appear like jewels in dull winter borders. Hellebore ‘Yellow Spotted’ is the essential low maintenance plant for any difficult, shady border where they will form clumps of leathery evergreen foliage for a year round garden presence. These resilient hardy perennials are vigorous and long lived, lasting for 20 years or more. Height and spread: 45cm (18").



Thompson & Morgan inherited the highly-commended hellebore breeding programme of Elizabeth Strangman when she retired and we are immensely proud to carry on her legacy, perfecting the amazing colours and forms of this wonderful perennial.
More info
    • 1 x 9cm potted plant

    • Despatch: By end of March 2015
    •  
    • £13.99

Scabious 'Butterfly Magnets Mixed'

Scabiosa atropurpurea, Pincushion Flower

Marvel at the whirling clouds of butterflies that are drawn to this lovely Scabious mix. Pincushion blooms in a super colour range are supported on tall wiry stems that make fabulous cut flowers. Scabious 'Butterfly Magnets Mixed' creates a wonderful billowing, airy feature for the back of cottage garden borders particularly when planted in large drifts. Height: 90cm (36"). Spread: 30cm (12").
More info
    • 3 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £9.99
    • 6 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £14.99
    • 9 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £19.99
    • Out of stock