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.

We have found 220 products.
 

Perennial Collection A+B

 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 150cm (60"). Spread: 75cm (30").

  • Perennial Collection A + B comprises:
  • A. Coreopsis 'Sunray' - Neat, compact plants bear golden-yellow, semi-double flowers all summer long.
  • B. Geum 'Blazing Sunset’ - Fully double, large scarlet blooms are borne over a long period in summer.
  • C. Scabiosa 'Blue Jeans' - Blue pincushion flowers attract bees and butterflies throughout summer
  • D. Echinacea 'Primadona' - Beautiful pink daisy flowers with petals that radiate outwards instead of downwards.
  • E. Poppy 'Pizzicato' Mixed - A neat semi dwarfing variety, producing up to 20 large flowers per plant!
  • F. Silene 'Jack Flash' - Scarlet blooms carried on elegant, slender stems over a long period.
  • G. Aquilegia 'Swan' Mixed - Long flowering, large blooms on upright, multi-branched stems.
  • H. Lavender 'Munstead' - A neat, compact variety of fragrant English lavender.
  • I. Heuchera 'Palace Purple' - Glossy, semi-evergreen purple leaves provide year round colour.
  • J. Delphinium 'Pacific Giants' - Excellent for adding structure and presence to the back of borders.
  • K. Gaillardia 'Arizona' - A spectacular dwarf Blanket Flower with a long-flowering period.
  • L. Carnation 'Ever-blooming Mixed' (Hardy) - Richly fragrant blooms that are ideal for cutting.

If you require a smaller perennial collection, have a look at Perennial Collection A and Perennial Collection B.

 More info
    • 72 plug plants - 6 of each variety

    • Despatch: By end of August 2013
    • SAVE £52.89  
    • £71.88 £18.99
Pansy 'Matrix'™ Mixed

Pansy 'Matrix™ Mixed'

Viola x wittrockiana

  Customer Rating
  • Best In Class for winter pansy - click here for details
  • Colour throughout winter and spring
  • 100% bigger, better and stronger than Pansy 'Universal'

This vibrant blend has been specially bred for their excellent branching habit and super size flowers; and the results speak for themselves! The compact sturdy stems hold their vibrant flower heads high, whatever the weather brings to ensure your garden is filled with colour. Easy to grow, Pansy ‘Matrix Mixed’ is the perfect plant for all your containers and bedding displays. Height and spread: 23cm (9").

 

Culinary note: Pansy flowers are edible.

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

 More info
    • 36 plugs

    • Despatch: By end of August 2013
    • +FREE £5 promo voucher  
    • £8.99
    • 72 plugs

    • Despatch: By end of August 2013
    • +FREE £5 promo voucher  
    • £17.98 £12.99
Golden Alexander (Lysimachia punctata)

Golden Lysimachia

Lysimachia punctata, Dotted Loosestrife
  • NEW in 2013
  • A towering, elegant plant for the border
Bring some sunshine to a damp, dark problem corner or an awkward spot under a tree with this resilient perennial. A new form of an old cottage garden favourite, the striking colour of the flowers contrasts beautifully with the golden-edged foliage. Enjoy a ‘Golden Alexander’ glow all summer long. More info
    • 5 Postiplugs

    • Despatch: By end of September 2013
    •  
    • £9.99
    • 10 Postiplugs

    • Despatch: By end of September 2013
    • SAVE £4.99  
    • £19.98 £14.99
Rose Lily Grass

Rose Lily Grass

Rhodohypoxis
  • NEW in 2013
  • Flowers in just 6 weeks from planting
Quick and easy to grow, these new lily grass plug plants will certainly appeal to the impatient gardener! In just 6 weeks after planting, your plants will explode into colour and flower. Plants tend to flower prolifically as each plug contains more than 1 bulblet, therefore giving plants extra ‘flower power’. Lily grass is a littleknown plant that’s really well worth a try; it’s maintenance-free, long-flowering and resistant to all pests and diseases! More info
    • 1 jumbo plug

    • Despatch: By end of September 2013
    •  
    • £10.99
    • 3 jumbo plugs

    • Despatch: By end of September 2013
    • SAVE £16.98  
    • £32.97 £15.99
Geum Collection

Geum 'Cocktail Collection'

Avens
  • NEW in 2013

A truly magnificent collection of Geums in a mixture of cocktail colours which will bring warmth and excitement to your summer perennial borders. The pretty, bowl-shaped blooms are held high above the foliage on elegant, wiry stems, which are ideal for cutting for a vase indoors. Easy to grow, reliable and with a long flowering period, Geum 'Cocktail Collection' is an essential addition to your summer garden.


  • Collection comprises the following varieties:
  • Geum 'Alabama Summer' - Purple buds open to reveal golden, semi-double flowers with orange and red markings. Height: 45cm (18"). Spread: 40cm (16").
  • Geum 'Totally Tangerine' - Gorgeous pale orange blooms on thin, wiry stems. Height: 60cm (24"). Spread: 50cm (20").
  • Geum 'Mai Tai' - A compact Geum with beautiful, ruffled apricot-orange blooms emerging from contrasting burgundy buds. Height: 45cm (18"). Spread: 40cm (16").
  • Geum 'Tequila Sunrise' - A sunny new Geum with semi-double, yellow flowers; each petal blushed rose at the tips. Height: 45cm (18"). Spread: 40cm (16").
 More info
    • 4 jumbo plugs - 1 of each variety

    • Despatch: By end of September 2013
    • SAVE £24.97  
    • £39.96 £14.99
    • 8 jumbo plugs - 2 of each variety

    • Despatch: By end of September 2013
    • SAVE £59.93  
    • £79.92 £19.99
Foxglove 'Illumination Chelsea Gold'

Foxglove 'Illumination Chelsea Gold'

Digitalis
  • 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 July 2013
      •  
      • £14.99
      • 6 jumbo plugs

      • Despatch: By end of July 2013
      • SAVE £9.99  
      • £29.98 £19.99
Creeping Phlox Collection

Phlox Collection (Creeping)

Phlox subulata, Phlox douglasii, Moss Phlox
  • Fragrant ground cover
Delicate in appearance but tough in character, these spreading evergreen perennials soften the edges of paths and grow in dry rockeries or on sunny banks and slopes. Perfect for creating colourful, weed smothering, ground cover. Height: 15cm (6”). Spread: 50cm (20”).
  • Collection comprises:
  • Phlox subulata ‘Candy Stripes’
  • Phlox douglassi ‘Red Admiral’
  • Phlox subulata ‘Calvides White’
  • Phlox subulata ‘Scarlet Flame’
  • Phlox subulata ‘Emerald Cushion Blue’
 More info
    • 5 Postiplugs

    • Despatch: By end of July 2013
    •  
    • £9.99
    • 10 Postiplugs

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

Mazus reptans

  • New in 2012
  • Try a new ground cover idea
This low growing, matt-forming perennial is perfect for filling gaps between stepping stones or at the front of sheltered borders and rockeries. The spreading foliage of Mazus reptans forms a dense carpet that is covered in pretty lilac-blue flowers with a yellow-spotted lower lip. This hardy, ground cover alpine has a long flowering period from late spring to July. Height: 5cm (2"). Spread: 30cm (12"). More info
    • 5 jumbo plugs

    • Despatch: By end of September 2013
    •  
    • £14.99
    • 10 jumbo plugs

    • Despatch: By end of September 2013
    • SAVE £9.99  
    • £29.98 £19.99
Polyanthus Eliator Crescendo® Mixed F1 Hybrid

Polyanthus eliator 'Crescendo® Mixed' F1 Hybrid

Primula, Oxlip
 Customer Rating
  • Best In Class for polyanthus click here for details
  • Polyanthus are a majestic spring container choice
  • RHS Award of Garden Merit

Give your garden a dose of springtime magic and banish the winter gloom. Polyanthus ‘Crescendo®’ paints a rainbow of colour with its large blooms in bright colours making bold splashes in pots, window boxes and borders.The flowers are long-lasting, fragrant and produced in abundance upon strong stems which are held above neat rosettes of foliage. With excellent winter hardiness and superior disease resistance, you can expect repeat performances year after year. By far the best bedding polyanthus available.

 

Culinary note: Primula flowers are edible.

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

 More info
    • 36 plugs

    • Despatch: By end of August 2013
    •  
    • £11.99
    • 72 plugs

    • Despatch: By end of August 2013
    •  
    • £16.99

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"). Please note: Plants are selected at random from a wide colour range.

 More info
    • 5 jumbo plugs

    • Despatch: By end of November 2013
    •  
    • £12.99
    • 10 jumbo plugs

    • Despatch: By end of June 2013
    • SAVE £7.99  
    • £25.98 £17.99
Osteospermum Collection (Hardy)

Osteospermum Collection (Hardy)

African Daisy, Cape Daisy
 Customer Rating

Versatile and resilient, hardy Osteospermums will thrive in hot, dry, neglected conditions, yet remain some of longest-flowering plants in the garden! Expect vibrant summer colour and weed suppressing ground cover from these easy to grow, sun loving Cape Daisies. Height: 15cm (6"). Spread: 90cm (36").

  • Collection comprises:
  • Osteospermum ‘Snow Pixie’ - A perfect contrast to its purple-pink coloured cousins, sporting clean, white petals with a golden yellow eye.
  • Osteospermum ‘Tresco Purple’ - Bold pink daisy flowers open every morning to greet the sun.
  • Osteospermum jucundum var. compactum - Irrepressibly cheerful, bright pink daisy flowers smother carpets of low growing foliage.
 More info
    • 9 jumbo plugs - 3 of each variety

    • Despatch: By end of September 2013
    • SAVE £16.98  
    • £35.97 £18.99