Thompson & Morgan

Important delivery notice
The products on this site are only delivered to UK addresses. If you require delivery to another country please visit one of our other sites below.

Refine Results

Refine by..

Email Newsletter

Sign up to our newsletter

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 203 products.
 

Perennial 'Best Value' Collection

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 'Hidcote' - This classic English lavender plant has an attractive grey-green fragrant foliage and will display stunning violet-blue compact spikes.
  • Digitalis 'Dalmation Mixed' - Well branched, compact, dwarf plants. Height: 50cm (20"). Spread: 40cm (16").
  • Erigeron 'Stallone' - This cheery clump forming perennial enjoys light sandy soils, making it ideal for coastal gardens.
  • Echinacea 'Pink Parasol' - Pink Parasol has stunning, large, deep purplish-pink blooms, with contrasting orange cones standing proudly above strong stems.
  • 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").
  • Coreopsis 'Early Sunrise' - Golden yellow, semi double flowers that attract bees and butterflies. Height: 45cm.
More info
    • 72 perennial plug plants - 6 of each variety

    • Despatch: By end of June 2016
    • SAVE £51.89  
    • £71.88 £19.99

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 x 7cm potted hellebore plants

    • Despatch: By end of May 2016
    •  
    • £13.99
    • 10 x 7cm potted hellebore plants

    • Despatch: By end of May 2016
    •  
    • £18.99

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 foxglove plant

    • Despatch: By end of June 2016
    •  
    • £14.99
    • 2 x 9cm potted foxglove plants

    • Despatch: By end of June 2016
    • SAVE £9.99  
    • £29.98 £19.99

Foxglove 'Illumination Collection'

Digitalis

Parentage from the little-known Isoplexis (Canary Island Foxglove) gives these exciting new Digitalis their fabulous tropical colouring. Being completely sterile Foxglove 'Illumination Duo' won't set seed, making them incredibly long flowering. Unlike most foxgloves which are generally biennial, these hardy semi-evergreen varieties are true perennials so you can enjoy them year after year. 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").

More info
    • 2 x 9cm potted foxglove plants - 1 of each colour

    • Despatch: By end of June 2016
    • SAVE £9.99  
    • £29.98 £19.99

SunDiascia 'Eternal Flames'

Twinspur

 Customer Rating
  • T&M exclusive
  • Brand new hardy diascia
This lovely South African plant produces slender spires, packed with pretty tubular blooms, over a remarkably long flowering period. Diascia 'Eternal Flames' will fill borders, beds and containers with vibrant shades of orange and pink from June to October. Although Twinspur is generally grown as an annual, it is actually perennial and hardy to -8C (18F), so it can be easily overwintered with some protection from winter weather. Height and spread: 30cm (12").
More info
    • 3 sundiascia jumbo plug plants

    • Despatch: By end of May 2016
    •  
    • £9.99
    • 9 sundiascia Postiplug plants

    • Despatch: By end of May 2016
    • SAVE £14.98  
    • £29.97 £14.99

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 May 2016
    • + FREE £5 voucher  
    • £8.99
    • 5 heuchera Postiplug plants

    • Despatch: By end of June 2016
    • SAVE £3  
    • £14.99 £11.99
    • 6 heuchera Postiplugs

    • Despatch: By end of June 2016
    • + FREE £5 voucher  
    • £12.99
    • 10 heuchera Postiplug plants

    • Despatch: By end of June 2016
    • SAVE £5  
    • £24.99 £19.99

Foxglove 'Illumination Ruby Slippers'

Digitalis x valinii

  • New colour break
  • Multi-flowering Foxgloves
  • Prennial habit

The Digitalis Illumination Series, from our very own breeding programme, has changed the world of Foxgloves; taking them from a wiry, brief-blooming biennial wildflower to a handsome, tidy yet shrubby perennial with true garden performance.

Following several outstanding colour developments, our breeding team has done it again with the creation of a brand new colour break. Digitalis 'Illumination Ruby Slippers' is the latest addition to our award winning series. This beautiful foxglove produces multiple spires of open-mouthed blooms on short stocky plants that are just as at home in a patio pot as a cottage garden border scheme. Being completely sterile, this stunning Foxglove won't set seed, making it incredibly long flowering. As the main flower spike fades, multiple sideshoots spring up to offer five months of vivid floral colour. Parentage from the little-known Isoplexis (Canary Island Foxglove) gives this exciting new Digitalis its fabulous colouring and perennial habit. Height: 90cm (36"). Spread: 45cm (18")

More info
    • 1 x 9cm potted foxglove plant

    • Despatch: By end of June 2016
    •  
    • £14.99
    • 2 x 9cm potted foxglove plants

    • Despatch: By end of June 2016
    • SAVE £9.99  
    • £29.98 £19.99

Verbena bonariensis 'Lollipop' (Large Plant)

Glandularia, Verbena patagonica

 Customer Rating

Like its parents, Verbena bonariensis 'Lollipop' boasts the same tight clusters of floating purple flowers, but has short, compact stems that reach only half the height. Well shaped, uniform plants with an open airy habit attract butterflies to their glowing blooms from June to September. This fabulous hardy dwarf verbena is perfectly proportioned for patio pots and the front of borders where it creates a wonderful delicate airy effect. Height and spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1 litre potted verbena plant

    • Despatch: By end of May 2016
    •  
    • £7.99
    • 2 x 1 litre potted verbena plants

    • Despatch: By end of May 2016
    • SAVE £2.99  
    • £12.99

Alstroemeria 'Inca Smile'

Peruvian Lily, Alstroemeria 'Koncasmile'

The exotic, orchid-like blooms of Alstroemeria 'Inca Smile' have a resilience and longevity that belies their delicate appearance. This stunning Peruvian Lily blooms for up to 5 months with the largest Alstroemeria flowers that we have ever seen - almost twice the size of other varieties. With a neat semi dwarf habit, 'Inca Smile' is perfectly proportioned for containers or borders, and makes a superb cut flower too. Height: 35cm (14"). Spread: 25cm (10").
More info
    • 1 x 7cm alstroemeria potted plant

    • Despatch: By end of April 2017
    •  
    • £14.99
    • 3 x 7cm alstroemeria potted plant

    • Despatch: By end of April 2017
    •  
    • £24.99

Foxglove 'Dalmation 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 June 2016
    •  
    • £5.99
    • 24 foxglove plug plants

    • Despatch:
    •  
    • £13.99
    • Out of stock
    • 48 foxglove plug plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

Delphinium 'Pacific Giants'

 Customer Rating
A distinguished delphinium producing strong spikes of semi-double blooms in a dreamy blend of pink, lilac, purple, violet-blue, sky-blue and white. Delphinium 'Pacific Giants' are excellent for cutting and add structure and presence to the back of cottage garden perennial borders. Height: 150cm (60"). Spread: 75cm (30").
More info
    • 6 delphinium plug plants

    • Despatch: By end of June 2016
    •  
    • £5.99

Alstroemeria 'Indian Summer'

Peruvian Lily

 Customer Rating
  • Flowering for 6 months
You'll love the beautifully coloured flowers of Alstroemeria 'Indian Summer' set against unique rich, bronze foliage. These hardy Peruvian Lilies are compact with an upright habit, ensuring that stems are still a good length for cutting. The perfect perennial for borders and patio containers where it will flower continuously from June to November. Height: 75cm (30"). Spread: 60cm (24").

Useful links:

Read Michael Perry's blog: Make a change to your plant choices - 3

More info
    • 1 jumbo alstroemeria plug plant

    • Despatch: By end of September 2016
    • SAVE £3  
    • £11.99 £8.99
    • 3 jumbo alstroemeria plug plants

    • Despatch:
    • SAVE £5  
    • £19.99 £14.99
    • Out of stock