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, perennials live for 2 or more years and flower every year. Biennial plants 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 246 products.
 

Geranium 'Skyrocket® Mixed'

 Customer Rating
  • WORLD EXCLUSIVE

Wow - a new climbing geranium, growing 1.8m (6’) in a season! Five of the brightest colours you've ever seen, set against fresh-green foliage. The extra long stems are smothered with rainbows of colour that make a surprisingly good cut flower! Geranium ‘Skyrocket®’ Mixed also makes a superb trailing specimen too – just perfect for window boxes and patio pots.

Precise German breeding has developed these top quality plants, so they are guaranteed to give a superb performance. Colours include: white, scarlet, dark red, orange and pink. Height: 1.8m (6’). Spread: 60cm (24”).


To make the most of your displays, try our exclusive Supportive Climbing Frame, specially designed to enable plants to climb easily. Or try our great value Acrylic Vase - perfect for displaying your cut blooms.

More info
    • 5 jumbo plugs

    • Despatch: By end of April 2014
    •  
    • £13.99
    • 5 jumbo plugs + 1 frame

    • Despatch: By end of April 2014
    • SAVE £6.99  
    • £26.98 £19.99
    • 10 jumbo plugs

    • Despatch: By end of April 2014
    • SAVE £8.99  
    • £27.98 £18.99

Buddleja 'Buzz'™ Collection

Buddleia, Butterfly Bush

 Customer Rating
A new twist on a much-loved garden favourite, ‘Buzz’™ is the world's first patio buddleja! These attractive, compact plants are loved by bees and butterflies, but won't take over your garden. Buddleja ‘Buzz'™ is easy to grow and problem-free with a super long-flowering period. Perfectly proportioned for patio pots and smaller gardens. Height and spread: 120cm (47”).
Collection comprises varieties:
Buddleja ‘Buzz™ Sky Blue’
Buddleja ‘Buzz™ Magenta’
Buddleja ‘Buzz™ Ivory’

Useful links:

How to grow Buddleja Buzz™

Gardening news: Top 10 best-selling plants of 2012

More info
    • 3 jumbo plugs - 1 of each variety

    • Despatch: By end of July 2013
    • SAVE £13.98  
    • £26.97 £12.99
    • 9 jumbo plugs - 3 of each variety

    • Despatch: By end of May 2013
    • SAVE £63.92  
    • £80.91 £16.99

Hyacinth Orchid

Bletilla striata,Bletilla hyacinthina

Beautiful, magenta pink blooms hang from the tips of slender stems. The lovely colours, distinctive fragrance and architectural elegance of the Hyacinth Orchid add a touch of class to damp woodland borders. Although quite slow to spread, once established Bletilla striata is surprisingly easy to grow. Ideal for planting in reliably moist or boggy soils, and you can even try it in containers. Height and spread: 45cm (18"). More info
    • 1 bareroot plant

    • Despatch: By end of November 2013
    •  
    • £14.99
    • 2 bareroot plants

    • Despatch: By end of November 2013
    • SAVE £9.99  
    • £29.98 £19.99

Chelsea Gold Collection

  • Grow the show plants of Chelsea

Each year, the Chelsea Flower Show is simply overflowing with top choice perennials. Grow the best of the bunch with our exclusive Chelsea Gold Collection. These varieties are all well-known and respected plants at the show, very often featured in the designer gardens and all offer great garden performance year after year.

  • Collection comprises:
  • Papaver 'Champagne Bubbles' - This brightly coloured Icelandic poppy makes a superb display dotted throughout rockeries and lining walkways. Height: 45cm (18"). Spread: 30cm (12").
  • Lavender 'Lavance Purple' - Bright purple flower spikes rise above a mass of silvery foliage that takes on a lovely metallic sheen in dry conditions. Height and spread: 60cm (24").
  • Aquilegia 'Swan Mixed' - A lovely mix of colourful columbines, producing an abundance of large flowers on upright, multi-branched stems. Height: 30cm (12"). Spread: 25cm (10").
  • Verbena bonariensis - Tightly clustered florets form glowing lavender flower heads that float atop stiffly upright, branching stems. Height: 200cm (79"). Spread: 45cm (18").
  • Foxglove 'Dalmatian Cream' - This statuesque foxglove has a sturdy, uniform habit forming well branched plants that look magnificent in cottage gardens and woodland borders. Height: 50cm (20"). Spread: 40cm (16").
  • Delphinium 'Guardian Blue' - Towering columns of royal blue flowers rise above clumps of deeply cut foliage. Height: 150cm (60"). Spread: 60cm (24").
More info
    • 72 plugs - 12 of each variety

    • Despatch: By end of June 2013
    •  
    • £18.99

Foxglove 'Illumination Chelsea Gold'

  • NEW in 2013
To celebrate our Best New Plant success at the RHS show, we have named our new Foxglove ‘Illumination’ variety 'Chelsea Gold'. Just like its pink cousin, this spectacular foxglove is completely sterile, giving it an incredibly long flowering period as it won’t set seed. Unlike most foxgloves which are generally biennial, this 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:

Read Michael Perry's blog: Futuristic Foxgloves

More info
    • 3 jumbo plugs

    • Despatch: By end of June 2013
    •  
    • £14.99
    • 6 jumbo plugs

    • Despatch: By end of June 2013
    • SAVE £10.00  
    • £29.98 £19.98

Geranium 'Black Velvet Mix' F1

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • Rarely available

Dark, enigmatic foliage makes a startling foil for the beguiling bright blooms of Geranium ‘Black Velvet Mix’ in four striking colours. The unique black leaves, produced on upright bushy plants, are edged with just a hint of green. This boldly coloured zonal geranium makes a striking addition to pots, beds and borders for long lasting summer colour. Height: 40cm (14”). Spread: 30cm (12”).

More info
    • 24 plugs

    • Despatch: By end of June 2013
    •  
    • £9.99
    • 48 plugs

    • Despatch: By end of June 2013
    •  
    • £19.98 £14.99

Coreopsis grandiflora 'Presto'

Tickseed

 Customer Rating
Coreopsis ‘Presto’ is so long-flowering and colourful that you can mix it up with summer bedding annuals to achieve a truly amazing, long lasting display. Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long. This versatile tickseed plant will grow almost anywhere, even in dry soil! Height and spread: 45cm (18”).
More info
    • 12 plugs

    • Despatch: By end of May 2013
    •  
    • £5.99
    • 36 plugs

    • Despatch: By end of May 2013
    • SAVE £6.00  
    • £9.99 £3.99
    • 72 plugs

    • Despatch: By end of May 2013
    • Double up 36 to 72 for £5 extra  
    • £19.98 £14.99

Wildflower Collection

  • NEW in 2013
  • Help boost bee and butterfly numbers
  • Easy to grow

Establishing your own wildflower meadow couldn’t be easier with this diverse collection of wildflower plug plants. A wildflower patch in your garden makes a lovely informal display that needs little maintenance. You'll be amazed at the beneficial insects and birds they attract, many of which will act as pollinators and natural pest control for your garden! Try sprinkling some wildflower seed between these plug plants - they will all knit nicely together. The perennial varieties will come back year after year whilst the annuals will happily self seed and reappear in a new position each year. Height: 150cm (59"). Spread: 50cm (20").


  • Collection comprises:
  • Foxglove (Digitalis) - A perennial cottage garden favourite for its tall spires of bell shaped flowers.
  • Self-Heal (Prunella) - This low growing perennial makes superb ground cover.
  • Lady's Bedstraw (Galium) - Slender stems of frothy yellow blooms make this perennial wildflower particularly eye catching.
  • Ox-eye Daisy (Leucanthemum) - These cheery perennial daisies make a fabulous summer display.
  • Cornflower (Centaurea) - A well loved annual with stunning bright blue flowers.
  • Ragged Robin (Lychnis) - The tall stems of this perennial bear pretty pink blooms with a ragged appearance - hence the name!
  • Field Scabious (Knautia) - A lovely perennial with intricate pincushion flowers.
  • Common Knapweed (Centaurea) - A tall perennial thistle with cerise pink blooms followed by fluffy seed heads.
  • Meadow Buttercup (Ranunculus) - The golden cup shaped blooms make this perennial it instantly recognisable.
  • Teasel (Dipsacus) - A well known perennial for its prickly autumn seedheads.
More info
    • 10 Postiplugs - 1 of each variety

    • Despatch: By end of April 2014
    • SAVE £16.98  
    • £29.97 £12.99
    • 20 Postiplugs - 2 of each variety

    • Despatch: By end of April 2014
    • + FREE packet of Wildflower Seed  
    • £59.94 £17.99

Gerbera 'Forever Daisies™' Collection B (Garvinea)

Barberton Daisy, Transvaal Daisy

  • Customer favourite
  • Order early for best results

The first winter hardy gerbera in a rainbow of colours! Solitary daisy flowers appear throughout summer with their faces upturned towards the sun. Enjoy Gerbera ‘Forever Daisies™’ year after year in patio pots or planted en-masse in sunny beds and borders. These delightful gerbera daisies are also ideal for a fabulous cut flower display indoors. Height and spread: 45cm (18").

  • Collection comprises:
  • Gerbera 'Forever Daisies™' 'Layla' - Pink.
  • Gerbera 'Forever Daisies™' 'Sunny' - Yellow.
  • Gerbera 'Forever Daisies™' 'Sophie' - Red.
More info
    • 3 x 9cm potted plants

    • Despatch: By end of June 2013
    •  
    • £14.99
    • 6 x 9cm potted plants

    • Despatch: By end of June 2013
    • SAVE £2.99  
    • £29.98 £26.99

Dianthus 'Hot Lips'

Pink

  • NEW in 2013
  • Mail Order Exclusive
Small in stature but big on personality! Colourful Dianthus ‘Hot Lips’ produces plenty of pretty white flowers, each with a gently spicy fragrance and edged in a striking shade of maroon. The bright green foliage forms a carpet of close knit ground cover that is perfectly proportioned for alpine gardens, rockeries and shallow troughs. Height: 15cm (6"). Spread: 20cm (8").
More info
    • 5 pencil plugs

    • Despatch: By end of May 2013
    •  
    • £9.99
    • 10 pencil plugs

    • Despatch: By end of May 2013
    • SAVE £4.99  
    • £19.98 £14.99

Alstroemeria 'Butterfly Hybrids' - Part of the Alan Titchmarsh Collection

Peruvian Lily

 
  • WORLD EXCLUSIVE
An old strain of Peruvian lilies called the ‘Ligtu Hybrids’ included some great purples, but over the years these got lost. Now only the pinks and purples have been selected to create this eye-catching mix. Your plants will be smothered with butterflies from the moment the blooms open. One of the easiest cut flowers to grow and definitely one of the most impressive. Height and spread: 60cm (24”).
More info
    • 3 Postiplugs

    • Despatch: By end of June 2013
    •  
    • £9.99
    • 6 Postiplugs

    • Despatch: By end of June 2013
    • SAVE £4.99  
    • £19.98 £14.99

Foxglove 'Illumination Duo'

  • T&M's own breeding

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").

  • Collection comprises:
  • Foxglove ‘Illumination Pink’ - Awarded ‘Best New Plant’ at the Chelsea Flower Show 2012.
  • Foxglove 'Illumination Chelsea Gold' - The latest addition to the ‘Illumination’ range, with exotic looking peachy-orange blooms.
More info
    • 6 jumbo plugs - 3 of each variety

    • Despatch: By end of June 2013
    • SAVE £10.00  
    • £29.98 £19.98