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 31 products.
 

Agapanthus 'Twister'

African Blue Lily

  • New in 2015
Here's a plant that will stand out from the crowd in your garden - the first ever deciduous bicolour Agapanthus. This African lily is robust, and truly hardy in the UK meaning it's perfect in the garden border as well as in a patio container. The flowers of Agapanthus 'Twister' are absolutely glorious, with crystal white flutes turning inky blue at the tips. The huge globes of colour appear from mid to late summer, hosted on strong, sturdy stems that need no staking. Height: 60cm (24"). Spread: 50cm (20").
More info
    • 1 x 9cm potted agapanthus plant

    • Despatch: By end of September 2015
    •  
    • £13.99
    • 2 x 9cm potted agapanthus plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Meconopsis baileyi 'Hensol Violet'

Himalayan Blue Poppy, Tibetan Blue Poppy, Meconopsis betonicifolia

  • New in 2015
The 'must-have' Himalayan Blue Poppy' has a rival in this exquisite cultivated form. Bright violet-purple, almost shimmering flowers, with the merest hint of red, make a stunning addition planted in groups in shady borders and woodland areas. This 'collectors plant' still surprises countless poppy-lovers who have never seen this unusual perennial before. Meconopsis betonicifolia 'Hensol Violet' is so named for its origins from Hensol Castle, South Wales, where it was discovered by Lady Henderson. Height: 90 (36"). Spread 30cm (12").
More info
    • 1 x 9cm potted meconopsis plant

    • Despatch: By end of October 2015
    •  
    • £11.99
    • 2 x 9cm potted meconopsis plants

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

Lupin 'Russell Hybrids Mixed'

Lupinus

Tall spires of tightly packed flowers rise above clumps of palmate foliage in a magical array of colours. This wonderful mix of the ever popular 'Russell Hybrids' is ideal for adding height and structure to the back of perennial borders and woodland edges. A distinctive hardy perennial that remains a cottage garden favourite. Height: 90cm (36"). Spread: 50cm (20"). More info
    • 3 x 5cm potted lupin plants

    • Despatch: By end of July 2015
    •  
    • £9.99
    • 6 x 5cm potted lupin plants

    • Despatch: By end of July 2015
    • Save £6.99  
    • £19.98 £12.99

Perennial Ground Cover Collection

  • New in 2015

Our ground cover collection of hardy herbaceous perennials brings so many benefits, which all lead to one thing: low maintenance gardening. We've selected some of our best low-growing perennials to offer a range of planting solutions. Use them as front of border plants in large sunny borders or set them in dappled shade as underplanting to trees and shrubs. You can even try them in pots and use your new perennial containers alongside seasonal pots. Every plant in the mix offers a controlled spreading habit, helping to quickly fill borders, cover soils and prevent weeds taking hold. And less weeding leads to more time spent enjoying your garden!


  • Perennial Ground Cover Collection comprises:
  • Arabis 'Lotti Pink' - A spring flowering, cushion-like perennial.
  • Armeria 'Ballerina Mixed' - Dense cushions of bright green foliage produce spherical flower heads set atop sturdy upright stems.
  • Dianthus deltoides 'Red' - Neat clumps of silver green foliage that makes stunning ground cover.
  • Campanula 'Dwarf Blue' - Cushion-like plants, which are smothered in violet-blue flowers through the summer months.
  • Aubrieta 'Mixed' - These tough little plants will thrive in the poorest of soils, forming dense mats of evergreen foliage.
  • Erigeron 'Stallone' - This cheery clump forming perennial enjoys light sandy soils, making it ideal for coastal gardens.

Powerliner® plugs are well established, mature plugs which can be potted on or can be planted straight into the border or containers. Each plug module is 6.5cm in diameter.
More info
    • 6 Powerliner plug plants - 1 of each variety

    • Despatch: By end of September 2015
    •  
    • £8.99
    • 12 Powerliner plug plants - 2 of each variety

    • Despatch: By end of September 2015
    •  
    • £12.99

Perennial Bumper Collection

  • New in 2015
Fill your beds and borders with this generous 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.

  • Collection contains one each of the following varieties:
  • Rudbeckia 'Goldsturm' - Bright, golden-yellow, daisy flowers with dark button eyes.
  • Verbascum 'Banana Custard' - Strong, erect spikes packed with dazzling two-tone yellow flowers.
  • Lobelia 'Starship Scarlet' - Ruby-red, glossy foliage and punchy, scarlet-red flower spikes.
  • Achillea 'Red Berries' - Panicles of red flowers above aromatic, fern like foliage.
  • Verbena 'Buenos Aires' - A drought resistant perennial with glowing clusters of purple flowers.
  • Erigeron 'Blue Beauty' - Showy lavender blue daisies throughout the summer.
  • Hollyhock 'Halo' - A stunning cottage garden perennial for the back of the border.
  • Poppy 'Fruit Punch' - Enchanting weather resistant silky, ruffled blooms.
  • Digitalis 'Dalmatian' - Well branched, compact plants for the back of the border.
  • Scabious 'Beaujolais Bonnets' - Rich burgundy flowers with contrasting paler outer petals and white stamens.
  • Gaillardia 'Mesa Peach' - Bright gold and peach tones bring instant sunshine to the front of borders.
  • Geum 'Blazing Sunset' - Fully double, scarlet red flowers rise above clumps of foliage on thin, wiry stems.
  • Agastache foeniculum - Blue flower spikes appear above silvery-green, aniseed scented foliage.
  • Monarda 'Bergamo' - Aromatic foliage and whorls of spidery blooms that attract insects to your garden borders.
  • Oenothera 'Apricot Delight' - A beautifully scented Evening Primrose with colour-changing blooms.
  • Nepeta 'Hot Pink' - Catmint is well loved by gardeners and their cats for its sweet, pungent aroma and pretty flowers.
  • Dianthus 'Bananaberry Fizz' - Double magenta and yellow flowers on sturdy plants.
  • Salvia 'New Dimension Blue' - Violet blue flower spikes attract bees and butterflies.
  • Arabis 'Lotti Pink' - Uniform, well-branched plants with a neat compact habit are covered with pink blooms.
  • Erigeron 'Stallone' - Fast growing, carefree plants with two tone daisy flowers.
  • Dianthus deltoides 'Red' - Neat clumps of silver green foliage host plenty of small red flowers.
  • Campanula 'Dwarf Blue' - A proliferation of soft blue flowers on compact dwarf plants.
  • Aubrieta 'Mixed' - Tough little plants that will thrive in the poorest of soils.
  • Armeria 'Ballerina Mixed' - Globe shaped blooms above cushions of grassy foliage.

Powerliner® plugs are well established, mature plugs which can be potted on or can be planted straight into the border or containers. Each plug module is 6.5cm in diameter.
More info
    • 24 powerliner plug plants - 1 of each variety

    • Despatch: By end of September 2015
    •  
    • £24.99

Geum 'Totally Tangerine' (Large Plant)

Avens

Gorgeous pale orange blooms rise above clumps of foliage on thin, wiry stems. This free-flowering Geum is a tough and reliable addition to perennial borders where it will bloom non-stop from early summer right through until early autumn. The warm orange blooms of Geum 'Totally Tangerine' also make fantastic cut flowers for a vase indoors. Height: 60cm (24"). Spread: 45cm (18"). More info
    • 1 x 1 litre potted geum plant

    • Despatch: By end of July 2015
    •  
    • £7.99
    • 2 x 1 litre potted geum plants

    • Despatch: By end of July 2015
    •  
    • £12.99

Trollius 'Dancing Flame'

Globeflower

  • New in 2015
Add some heat to your border this autumn with Trollius 'Dancing Flame'. This Globeflower has everything you'd want from a border perennial; contained vigour, long flowering habit, care-free attitude, and years of garden performance! The glorious orange blooms just keep on coming right though early summer for 8 weeks of vibrant colour. This hardy herbaceous perennial thrives in moist soils but will cope with drought conditions once established. Height: 60cm (24"). Spread: 50cm (20").
More info
    • 1 x 9cm potted trollius plant

    • Despatch: By end of September 2015
    •  
    • £11.99
    • 2 x 9cm potted trollius plants

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

Perennial Fragrant Collection

  • New in 2015

A colourful mix of hardy perennials, all chosen for their fragrance and flower power. Drop them into gaps in the border or fill a whole new bed with this autumn planting perennial collection. There's something for every part of the garden in this elegant mix, which has been hand selected to guarantee colour and scent in the garden from June right though to the end of September. These hardy garden plants return each year to give a bigger and better display than the last - the perfect low maintenance option for high-end results.


  • Perennial Fragrant Collection includes:
  • Agastache foeniculum - Silvery-green foliage which is scented unmistakenly of aniseed.
  • Monarda 'Bergamo' - Deliciously aromatic foliage and whorls of spidery pink blooms.
  • Oenothera 'Apricot Delight' - Tightly scrolled buds open in palest lemon, maturing to yellow, apricot and finally salmon-pink.
  • Nepeta 'Hot Pink' - Pink flowered Catmint with pungent, aromatic foliage.
  • Dianthus 'Bananaberry Fizz' - Rich, clove-scented, double blooms in lemaon and magenta.
  • Salvia 'New Dimension Blue' - Intense violet blue flower spikes above aromatic foliage.

Powerliner® plugs are well established, mature plugs which can be potted on or can be planted straight into the border or containers. Each plug module is 6.5cm in diameter.
More info
    • 6 Powerliner plug plants - 1 of each variety

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 12 Powerliner plug plants - 2 of each variety

    • Despatch: By end of September 2015
    •  
    • £14.99

Lupin 'Russell Hybrids Mixed' (Large Plant)

Lupinus

Tall spires of tightly packed flowers rise above clumps of palmate foliage in a magical array of colours. This wonderful mix of the ever popular 'Russell Hybrids' is ideal for adding height and structure to the back of perennial borders and woodland edges. A distinctive hardy perennial that remains a cottage garden favourite. Height: 90cm (36"). Spread: 50cm (20"). More info
    • 1 x 2 litre potted lupin plant

    • Despatch: By end of July 2015
    •  
    • £9.99
    • 2 x 2 litre potted lupin plants

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

1st Year Flowering Perennial Collection

  • New in 2015
An essential mix of hardy herbaceous perennials, all selected to bring big impact to your garden in their first year, and many more to come. This classic combination of cottage garden staples offers four months of continual floral colour from early summer into autumn, which gets better and bolder as the years go by - just perfect for adding shape and structure to your planting displays. There's something for every part of the border too. Set the towering spires of Digitalis 'Dalmatian' and Hollyhock 'Halo' at the back of your designs behind Poppy 'Fruit Punch' and Scabious 'Beaujolais Bonnets'. Front the display with Gaillardia 'Mesa Peach' and Geum 'Blazing Sunset' for a tiered show of lasting shape and colour.

Powerliner® plugs are well established, mature plugs which can be potted on or can be planted straight into the border or containers. Each plug module is 6.5cm in diameter.
More info
    • 6 Powerliner plug plants - 1 of each variety

    • Despatch: By end of September 2015
    •  
    • £8.99
    • 12 Powerliner plug plants - 2 of each variety

    • Despatch: By end of September 2015
    •  
    • £12.99

Helenium 'Double Trouble' (Large Plant)

Helen's Flower, Sneezeweed

This modern variety is the first fully double Helen's Flower! Its delightfully narrow, golden petals form a ruffled collar around a button-like centre. Helenium 'Double Trouble' is a tall, well branched form that makes a particularly good cut flower. Blooming from July to October, this hardy perennial brings fabulous late summer colour to cottage garden borders and wildlife areas, where it will attract plenty of pollinating insects. Height: 80cm (31"). Spread: 60cm (24"). More info
    • 1 x 1 litre potted helenium plant

    • Despatch: By end of July 2015
    •  
    • £7.99
    • 1 x 3 litre potted helenium plant

    • Despatch: By end of July 2015
    •  
    • £12.99
    • 2 x 1 litre potted helenium plants

    • Despatch: By end of July 2015
    •  
    • £12.99
    • 2 x 3 litre potted helenium plants

    • Despatch: By end of July 2015
    •  
    • £19.99

Helenium 'Ruby Tuesday' (Large Plant)

Helen's Flower, Sneezeweed

Superb velvety red, daisy flowers with beautifully fluted petals, make a wonderful late summer display. Helenium 'Ruby Tuesday' forms an upright well branched plant that really earns its place in a moist, sunny border. Flowering from July to September, this striking variety associates well with hot fiery colours and swaying grasses, particularly in prairie planting schemes. An easy and undemanding hardy perennial, well loved by pollinating insects and also makes a good cut flower. Height: 60cm (24"). Spread: 45cm (18"). More info
    • 1 x 1 litre potted helenium plant

    • Despatch: By end of July 2015
    •  
    • £7.99
    • 2 x 1 litre potted helenium plants

    • Despatch: By end of July 2015
    •  
    • £12.99