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, 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 37 products.
 

Geranium himalayense 'Birch Double'

Geranium himalayense 'Plenum', Hardy Geranium, Cranesbill

Vigorous and versatile, this superb cranesbill tolerates almost any situation; even full shade. A mass of double purple-pink blooms stand above the delicately serrated foliage which turns to shades of burnt red and orange in autumn. Geranium himalayense 'Birch Double' will quickly blend with other herbaceous perennials to create colourful groundcover and looks equally attractive in herbaceous borders and shady woodland gardens. Height: 25cm (10”). Spread: 60cm (24”). More info
    • 1 bareroot plant

    • Despatch: By end of November 2014
    •  
    • £12.99

Buddleja 'Flower Power'

Buddleja x weyeriana 'Bicolor', Buddleia, Butterfly Bush

 Customer Rating
  • 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 plant

    • Despatch: By end of August 2014
    •  
    • £12.99
    • 3 jumbo plug plants

    • Despatch: By end of August 2014
    • Treble up 1 to 3 plugs for 1p extra  
    • £13.00

Buddleja 'Buzz™ Magenta'

Buddleja davidii, Buddleia, Butterfly Bush

 Customer Rating
  • T&M exclusive breeding
  • The best plant to attract butterflies to your garden
  • Dwarf patio buddleja - won't take over your garden
  • 15cm (6in) flowers the size of usual buddlejas, but plants are half the size
  • Long-flowering, brightly-coloured blooms attract butterflies
  • Easy to grow and problem-free
  • Plants last more than 10 years
  • Customer favourite

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™ Magenta' 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”).


Useful links:

How to grow Buddleja Buzz™

More info
    • 1 jumbo plug plant

    • Despatch: By end of October 2014
    •  
    • £8.99

Dianthus 'Purple Rain'

Carnation

  • New in 2014
  • World Exclusive
  • New and unique colour - without forsaking the fragrance

There are some genetically modified varieties out there with a blue tinge to the petals but Dianthus 'Purple Rain' is the closest to a natural blue carnation that we’ve seen. This modern hardy Carnation has an exquisite fragrance that is almost as alluring as its colour. Undemanding and well behaved, this clump forming perennial is perfect for the front of borders and makes a lovely cut flower too. Height: 40cm (16"). Spread: 30cm (12").


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

More info
    • 5 Postiplug plants

    • Despatch:
    •  
    • £11.99
    • Out of stock
    • 10 Postiplug plants

    • Despatch:
    • Save £6.99  
    • £23.98 £16.99
    • Out of stock

Nepeta 'Patchwork Mixed'

Catmint

  • New in 2014
  • Mail order exclusive
  • Splashes of colour, perennial too!
A new twist on a classic cottage garden plant! Nepeta ‘Patchwork Mixed’ has neat, compact growth that makes it perfect for summer bedding and patio pots. Catmint is well loved by gardeners and their cats for its sweet, pungent aroma and hazy pink and blue flowers. This hardy little perennial has a loose, relaxed habit that makes it perfect for creating soft, informal displays. Height and spread: 40cm (16").
More info
    • 24 plug plants

    • Despatch:
    •  
    • £10.99
    • Out of stock
    • 48 plug plants

    • Despatch:
    • Double up 24 to 48 for £5 extra  
    • £21.98 £15.99
    • Out of stock

Gentian 'Little Pinkie'

Gentiana

  • New in 2014
  • Mail order exclusive
  • Rare Pink Gentian!
Gentians are well known for their striking blue flowers, so we’re thrilled to be able to offer this stunning magenta-pink gentian! Bred in New Zealand, Gentian 'Little Pinkie' produces its dainty trumpet-shaped flowers above low cushions of semi-evergreen foliage. Ideal for rock gardens, raised beds and containers this charming, low maintenance plant will brighten up your garden from early summer onwards. Height: 15cm (6"). Spread: 20cm (8").
More info
    • 1 jumbo plug plant

    • Despatch: By end of August 2014
    •  
    • £11.99
    • 3 jumbo plug plants

    • Despatch: By end of August 2014
    •  
    • £19.99

Penstemon 'Blackberry'

  • New in 2014
Satin, bell-shaped flowers in a rich shade of purple smother the upright stems of this hardy perennial. From June onwards, the long-lasting flowers are produced above glossy, semi-evergreen foliage and continue their display well into autumn, long after most other summer perennials have faded. Penstemon 'Blackberry' is undemanding and easy to grow, tolerating almost any position in the garden, regardless of rain or drought, and even resisting slug damage! Height: 75cm (30"). Spread: 40cm (16").
More info
    • 3 Postiplug plants

    • Despatch: By end of August 2014
    •  
    • £9.99

Verbena bonariensis 'Lollipop'

Glandularia, Verbena patagonica

  • New in 2014
  • Unique mini Verbena for your patio
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").
More info
    • 3 jumbo plug plants

    • Despatch: By end of August 2014
    •  
    • £11.99
    • 6 jumbo plug plants

    • Despatch: By end of August 2014
    •  
    • £16.99

Lamium 'Mega Purple'

Dead-nettle

 Customer Rating
  • New in 2014
The glistening silvery foliage of Lamium ‘Mega Purple’ contrasts beautifully its mauve, open mouthed blooms. This resilient Dead Nettle loves a shady spot, where it will quickly form a carpet of shimmering leaves. Flowering throughout the summer, its nectar rich blooms are a magnet for pollinating insects making it ideal for wildlife gardens, cottage garden borders and woodland areas. This easy to grow hardy perennial is practically indestructible – the perfect choice for ‘no-fuss’ ground cover. Height: 30cm (12"). Spread: 45cm (18").
More info
    • 3 Postiplug plants

    • Despatch: By end of March 2015
    •  
    • £9.99
    • 6 Postiplug plants

    • Despatch: By end of March 2015
    • SAVE £4.99  
    • £19.98 £14.99

Campanula 'Mixed'

Bellflower

  • Exclusive collection
A robust mix of Campanula plants bearing semi-double, cup-shaped blooms in shades of white, purple and blue. These pretty flowers are borne in abundance on tall, slender stems from May to July, making a wonderful addition to the middle of perennial borders. Campanula 'Mixed' is ideal for creating drifts of summer colour in cottage garden borders where it will return year after year. Height: 75cm (30"). Spread: 45cm (18").
More info
    • 3 x 7cm potted plants

    • Despatch: By end of August 2014
    •  
    • £19.99
    • 6 x 7cm potted plants

    • Despatch: By end of August 2014
    • SAVE £14.99  
    • £39.98 £24.99

Osteospermum 'Tresco Purple' (Hardy)

Osteospermum 'Nairobi Purple', African Daisy, Cape Daisy

Bold pink daisy flowers open every morning to greet the sun. Versatile and resilient, hardy Osteospermum 'Tresco Purple' will thrive in hot, dry, neglected conditions and yet is one of the longest-flowering plants in the garden! Expect vibrant summer colour and weed suppressing ground cover from this easy to grow, sun loving Cape Daisy. Height: 15cm (6"). Spread: 90cm (36"). More info
    • 3 jumbo plug plants

    • Despatch: By end of August 2014
    •  
    • £13.99

Iris 'Cantina' (Re-Blooming)

Bearded Iris

The bold, violet blooms of Iris 'Cantina' are a magnificent sight in summer borders. With the first flowers appearing in late spring and continuing into summer, these really are outstanding hardy perennials. These majestic bearded iris flowers have a delicate scent and make impressive cut flowers for a vase indoors. Height: 90cm (36”). Spread: 40cm (16”). More info
    • 1 rhizome

    • Despatch: By end of September 2014
    •  
    • £8.99