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, 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 86 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.
More info
    • 72 plugs - 6 of each variety

    • Despatch: By end of August 2013
    • SAVE £52.89  
    • £71.88 £18.99

Wallflower Collection

Erysimum, Cheiranthus

Evergreen erysimum hybrids with an alluring perfume. Versatile and undemanding, this short lived perennial tends to be grown as a biennial, and is tough enough to cope in even the poorest of soils. Height and spread: 50cm (20").

  • Collection comprises:
  • Wallflower ‘Plant World Lemon’
  • Wallflower ‘Sweet Sorbet’
  • Wallflower ‘Winter Joy’
  • Wallflower ‘Winter Sorbet’
More info
    • 12 jumbo plugs - 3 of each variety

    • Despatch: By end of June 2013
    • SAVE £24.98  
    • £44.97 £19.99
Buddleja 'Flower Power'

Buddleja 'Flower Power'

Buddleja x weyeriana 'Bicolor', Buddleia, Butterfly Bush

  Customer Rating
  • NEW in 2012
  • Best shrub for summer colour
Magical blooms transform from deepest violet to rich butterscotch yellow for an enchanting kaleidoscope of colour. The fragrant flowers of Buddleja ‘Flower Power’ are certain to attract butterflies and other beneficial insects to your garden. This colourful, low maintenance butterfly bush has a neat compact habit – just perfect for small gardens.Height and spread: 200cm (79"). More info
    • 1 jumbo plug

    • Despatch: By end of June 2013
    •  
    • £12.99
    • 3 jumbo plugs

    • Despatch: By end of June 2013
    • Treble up 1 to 3 plugs for 1p extra  
    • £13.00
Wallflower 'Most Scented' Mix

Wallflower 'Most Scented' Mix

Erysimum, Cheiranthus

  Customer Rating
  • The most scented wallflower
Don't overlook wallflowers! This popular cottage garden favourite is currently enjoying a revival. Wallflower ‘Most Scented Mix’ is a wonderful blend of specially selected Erysimum, chosen for their fabulous fragrance. Versatile and undemanding, this short lived perennial tends to be grown as a biennial, and is tough enough to cope in even the poorest of soils. Height and spread: 30cm (12"). More info
    • 36 plugs

    • Despatch: By end of August 2013
    •  
    • £9.99
    • 72 plugs

    • Despatch: By end of August 2013
    • SAVE £4.99  
    • £19.98 £14.99
Myosotis 'Sylva'

Myosotis sylvatica 'Sylva'

Forget-me-not
  • Brilliant with spring bulbs
The perfect partner for spring bulb displays. Frothy plants with not just the traditional blue flowers, but also new pinks and whites. So easy to grow, ‘Sylva’ will create a carpet of colour that will keep your garden looking fabulous until your summer plants kick in. A simple yet effective bed filler. More info
    • 36 plugs

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

    • Despatch: By end of August 2013
    • Double up 36 to 72 for £4 extra  
    • £23.98 £15.99
Aubrieta Royal Mixed

Aubrieta 'Royal Mixed'

Aubretia
 Customer Rating
These tough little plants will thrive in the poorest of soils, forming dense mats of evergreen foliage. Aubretia ‘Royal Mixed’ produces masses of colourful flowers in spring that will brighten rockeries, spill from containers and creep through cracks in walls and paving. Height: 10cm (4”); spread 60cm (24”). More info
    • 36 plugs

    • Despatch: By end of August 2013
    •  
    • £9.99
    • 72 plugs

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

Penstemon 'Pensham Trio'

Phenomenal stamina and indifference to rain and drought means that this trio of penstemon will flower each year for an incredible five months. Mesmerising bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. Height: 90cm (36”). Spread: 45cm (18”). Collection comprises 3 each of Penstemon Laura (bottom left), Penstemon Czar (top) and Penstemon Amelia Jayne (bottom right). More info
    • 9 Postiplugs - 3 of each variety

    • Despatch: By end of June 2013
    • SAVE £9.98  
    • £29.97 £19.99

Heuchera 'Tapestry' Mixture

Coral Flower, Coral Bells

  Customer Rating
  • Mail Order Exclusive
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 jumbo plugs

    • Despatch: By end of June 2013
    •  
    • £17.99
    • 6 jumbo plugs

    • Despatch: By end of June 2013
    • SAVE £13.99  
    • £35.98 £21.99
Perennial Collection A (Red Hot Poker, Lupin, Bergamot, Chrysanthemum maximum, Ozark Sundrops)

Perennial Collection A

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").

  • Perennial Collection A comprises:

  • A. Coreopsis 'Presto' - Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long.
  • B. Geum 'Blazing Sunset' - Prolific, early flowering, fully double flowers.
  • C. Scabiosa 'Blue Jeans' - An abundance of blue pincushion scabious flowers will attract bees and butterflies throughout summer.
  • D. Echinacea 'Primadonna' - unique 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 are carried on elegant, slender stems over a long period.
 More info
    • 36 plugs - 6 of each variety

    • Despatch: By end of August 2013
    • SAVE £21.95  
    • £35.94 £13.99
Perennial Collection B (Tickseed, Oriental Poppy, Coral Flower, Coneflower)

Perennial Collection 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 B comprises:
  • A. Aquilegia 'Swan' Mixed - Long flowering, producing an abundance of large flowers on upright, multi-branched stems.
  • B. Lavender 'Munstead' - This neat, compact variety of English lavender bears masses of dark purple-blue flower spikes.
  • C. Heuchera 'Palace Purple' - Glossy, semi-evergreen purple leaves provide year round colour.
  • D. Delphinium 'Pacific Giants' - Excellent for cutting and adding structure and presence to the back of borders.
  • E. Gaillardia 'Arizona' - A spectacular dwarf Blanket Flower with a long-flowering period and superb garden performance.
  • F. Carnation 'Ever-blooming Mixed' (Hardy) - Richly fragrant blooms that are perfect for cutting for a vase indoors.

More info
    • 36 plugs - 6 of each variety

    • Despatch: By end of June 2013
    • SAVE £21.95  
    • £35.98 £13.99
Dianthus barbatus 'Indian Carpet' Mixed - Part of the Alan Titchmarsh Collection

Dianthus barbatus 'Indian Carpet' Mixed

Sweet William
Create a carpet of magical spring colour with this compact, dwarf variety that knits together nicely when planted en masse. Sweet William ‘Indian Carpet’ Mixed brings together a superb colour range of reds, whites and bicolour blooms, each with a distinctive spicy clove scent. Often grown as a biennial, this short lived perennial is ideal for borders, beds and containers. Height: 15cm (6"). Spread: 25cm (10").

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

 More info
    • 48 plugs

    • Despatch: By end of August 2013
    •  
    • £13.99