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.


For beautiful summer flowers browse our range of annual plants.



We have found 199 products.
 

Osteospermum Collection (Hardy)

African Daisy, Cape Daisy

 Customer Rating
  • An abundance of flowers from mid summer to mid autumn
  • Plant 'en-masse' for a stunning border feature
  • Spreading habit will help suppress weeds

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 osteospermum jumbo plug plants - 3 of each variety

    • Despatch: By end of November 2016
    •  
    • £14.99

Phlox Collection (Creeping)

Phlox subulata, Moss Phlox

 Customer Rating
  • Fragrant ground cover
  • Flowers late spring
  • Attracts bees and butterflies
Groundcover needn't be dull! Carpet your garden in rich colour and keep the weeds at bay with our perennial creeping phlox collection. This hardy rockery plant has many uses – underplant trees, shrubs and tall perennials, soften path edging or cover awkward slopes and banks. If you're tired of your lawn, why not replace it with a sea of seasonal colour. This collection comes into its own in March to May, bridging the colour gap between winter and summer bedding. Height: 15cm (6"). Spread: 50cm (20").
  • Collection comprises:
  • Phlox subulata 'Candy Stripes'
  • Phlox subulata 'Snowflake'
  • Phlox subulata 'Red Wings'
  • Phlox subulata 'Drummonds Pink'
  • Phlox subulata 'Emerald Cushion'
More info
    • 5 phlox Postiplug plants

    • Despatch: By end of September 2016
    •  
    • £13.99
    • 10 phlox Postiplug plants

    • Despatch: By end of September 2016
    • SAVE *£7.99  
    • £27.98 £19.99
    • 20 phlox Postiplug plants

    • Despatch: By end of September 2016
    • SAVE *£30.97  
    • £55.96 £24.99
    • 50 phlox Postiplug plants

    • Despatch: By end of September 2016
    • SAVE *£99.91  
    • £139.90 £39.99

Pansy 'Matrix™ Mixed'

Viola x wittrockiana

 Customer Rating
  • 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: Some parts of these flowers are edible. The crystallised petals are great decorations for cakes and cookies, or they can be added straight to green salads for an injection of colour. For more details about edible flowers click here.

 

Buy this variety in a larger plant size
More info
    • 36 pansy plug plants

    • Despatch: By end of September 2016
    • + FREE £5 voucher  
    • £6.99
    • 72 pansy plug plants

    • Despatch: By end of September 2016
    • + FREE £5 voucher  
    • £9.99

Dianthus 'Scents of Summer Collection'

Pink, Carnation

  • T&M Exclusive

Immerse your senses in Dianthus 'Scents of Summer Mixed'! We've hand selected a range of modern dianthus plants to offer bright colours, strong garden performance and multi-flowering stems, while retaining the vintage spicy fragrance of garden pinks. The extreme flower power of these hardy perennials means you'll enjoy 100s of cut flower blooms through the summer, every year, with plenty left on the plants to keep them looking good in the garden. Height and spread: 30cm (12").


Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of September 2016
    • SAVE £5  
    • £9.99 £4.99
    • 10 dianthus Postiplug plants

    • Despatch: By end of September 2016
    • SAVE £7.50  
    • £14.99 £7.49
    • 20 dianthus Postiplug plants

    • Despatch: By end of September 2016
    • SAVE £12.50  
    • £24.99 £12.49

Iberis sempervirens (Large Plant)

Sprays of white, fragrant blooms smother the evergreen foliage of this Candytuft. Iberis sempervirens thrives in poor soils making this RHS AGM variety particularly useful for ground cover in rockeries and on top of walls. This shrubby perennial is equally at home in the front of borders where it will attract beneficial insects to its scented flowers. Height: 30cm (12"). Spread: 50cm (20").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1 litre potted iberis plant

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 2 x 1 litre potted iberis plants

    • Despatch: By end of September 2016
    •  
    • £14.99

Dianthus 'Perfumed Pinks' Collection

Carnation, Pink

Enjoy a garden filled with fragrance and colour this summer with this wonderful Perfumed Pinks Collection . Mounds of silver-green foliage produce an abundance of perfumed dianthus flowers. Perfect for borders and containers, or for cutting for a vase indoors. Height: 40cm (16"). Spread: 30cm (12"). Supplied as jumbo plugs.

  • Collection comprises:
  • Dianthus 'Cosmic Pink Swirl' - Pink and white petals with an almost shimmering effect.
  • Dianthus 'Cranmere Pool' - Palest pink petals with a touch of red deep within the ruffled centres.
  • Dianthus 'Doris' - Soft pastel pink blooms with a lovely fragrance.
  • Dianthus 'Letitia Wyatt'- Delicate baby pink blooms.
  • Dianthus 'Gran's Favourite' (x 5) - A popular and well known variety with pretty picotee edges.
More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of October 2016
    •  
    • £9.99
    • 10 dianthus postiplug plants

    • Despatch: By end of October 2016
    •  
    • £14.99
    • 20 dianthus postiplug plants

    • Despatch: By end of October 2016
    •  
    • £19.99

Heuchera 'Obsidian' (Large Plant)

This striking Coral Flower makes a bold statement. Fine sprays of creamy white flowers stand out against the glossy, deep maroon-black foliage. The nectar rich flowers of Heuchera 'Obsidian' attract pollinating insects and bring a light, airy feel to cut flower arrangements. This hardy evergreen perennial retains its elegant looks all year round, making it particularly useful for ground cover when planted en-masse. Perfect for individual patio pots or creating a sophisticated 'Black-tie' look in borders. Height: 45cm (18"). Spread: 30cm (12").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1 litre potted heuchera plant

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 2 x 1 litre potted heuchera plants

    • Despatch: By end of September 2016
    •  
    • £17.99

Heuchera 'Patchwork' Mix

Coral Flower, Coral Bells

 Customer Rating
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 heuchera Postiplugs

    • Despatch: By end of September 2016
    • + FREE £5 voucher  
    • £8.99
    • 5 heuchera Postiplug plants

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 6 heuchera Postiplugs

    • Despatch: By end of September 2016
    • + FREE £5 voucher  
    • £12.99
    • 10 heuchera Postiplug plants

    • Despatch: By end of September 2016
    •  
    • £24.99

Pachysandra terminalis (Large Plant)

Forming a dense mat of glossy evergreen leaves, Japanese Spurge is an ideal groundcover plant for growing in areas between shrubs and trees to prevent weeds from getting the chance to grow. The interesting foliage grows in rosettes of green toothed leaves which each produce a spike of small white flowers in early summer. Requiring virtually no aftercare once planted, this perennial plant can be allowed to spread wherever you let it, leaving you to enjoy your garden without having to worry about it. Height: 20cm (8"). Spread: 150cm (59").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 9cm potted pachysandra plant

    • Despatch: By end of September 2016
    •  
    • £7.99
    • 2 x 9cm potted pachysandra plants

    • Despatch: By end of September 2016
    •  
    • £11.99

Blechnum brasiliense 'Volcano'

Dwarf Brazilian Tree Fern, Hard Fern

 Customer Rating
  • Hardy down to -5c in the UK
Are Dicksonia tree ferns too large or expensive for you? We've found the answer - try the dwarf Brazilian tree fern instead! Blechnum brasiliensis 'Volcano' is an exciting new find for the home gardener, only recently introduced to the UK, but sure to be the next big thing! Compact plants lend themselves well to growing in patio pots; and throw up huge fronds up to 70cm (28") tall. The young fronds unfurl in a bronze volcanic hue turning a shiny green as they open. Over time, this fern will form a small trunk, growing to around 30cm tall in 10 years. A relative of our native Deer Fern, this fern thrives in low light, so it's perfect for giving an exotic touch to your home and garden. Despite its tropical origins, Blechnum brasiliense is hardy enough to be grown in most UK gardens, tolerating temperatures down to -5C (23F) but will appreciate a sheltered spot and some winter protection. Height: 90cm (36"). Spread: 70cm (28").
More info
    • 1 x 9cm potted blechnum plant

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 2 x 9cm potted blechnum plants

    • Despatch: By end of September 2016
    •  
    • £19.99

Red Hot Poker 'Fire Dance' (Large Plant)

Kniphofia

The Red Hot Poker is instantly recognisable. This reliable perennial is an old favourite for mixed herbaceous borders. Kniphofia 'Fire Dance' is a particularly useful selection, as it's extremely cold hardy. The scarlet and yellow blooms rise above dense clumps of evergreen foliage in summer.Plants also prove remarkably rabbit proof and these robust plants are loved by bees and butterflies too. Height: 50cm (20") Spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1 litre potted red hot poker plant

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 1 litre potted red hot poker plants

    • Despatch: By end of September 2016
    •  
    • £19.99

Phlox 'Bavaria'

Creeping Phlox are useful for dry, sunny spots and parched ground where other plants just won't grow! Once established, Phlox 'Bavaria' will thrive in the driest of soils, producing an impenetrable mat of fragrant flowers, suppressing weeds and resisting drought! The detailed eye on each gleaming white flower sets this stunning, evergreen drought tolerant perennial apart from the crowd. Height: 15cm (6"). Spread: 50cm (20").
More info
    • 5 phlox jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 10 phlox jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £14.99