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 326 products.
 

Delosperma 'Wheels of Wonder'

Hardy Ice Plant

  • Giant-flowered hardy ice plants
  • Bigger blooms for extra ground cover
A marked improvement on standard Ice Plants! Delosperma 'Wheels of Wonder' has flowers twice the normal size, and boasts some psychedelic colour combinations too. These hardy, low maintenance plants make fabulous ground cover for sunny banks and poor stony soils. Perfect for those hot, dry problem areas where many other plants would fail to establish. Height: 15cm (6"). Spread: 60cm (24").

SPECIAL OFFER - To get your delosperma plants at the reduced price, simply add your 5 plug plants to your order and use order code TNE492Z in your shopping basket.

Please note that this offer is limited to one pack per order at this special price. This offer cannot be used in conjunction with any other offer or with promotional vouchers. Hurry, offer ends midnight Tuesday 3rd March or whilst stock lasts. P&P charges will apply.

More info
    • 5 jumbo plug plants

    • Despatch: By end of March 2015
    • Only £4.99 with order code TNE492Z  
    • £13.99

Perennial 'Best Value' Collection

 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 1m (39"). Spread: 45cm (18").

  • Collection includes;

  • Lavender 'Munstead' - This neat, compact variety of English lavender bears masses of dark purple-blue flower spikes. Height: 45cm (18"). Spread: 60cm (24").
  • Digitalis 'Dalmation Mixed' - Well branched, compact, dwarf plants. Height: 50cm (20"). Spread: 40cm (16").
  • Echinacea 'Primadonna' - Beautiful pink daisy flowers with petals that radiate outwards instead of downwards. Height: 85cm (33"). Spread: 45cm (18").
  • Coreopsis 'Presto' - Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long. Height and spread: 45cm (18").
  • Verbena Bonariensis - Tightly clustered florets form glowing lavender flower heads that float atop stiffly upright, branching stems. Height: 200cm (78"). Spread: 45cm (18").
  • Scabiosa 'Blue Jeans' - Blue pincushion flowers attract bees and butterflies throughout summer. Height and spread: 45cm (18").
  • Aquilegia 'Swan' Mixed - An abundance of large flowers on upright, multi-branched stems Height: 30cm (12"). Spread: 25cm (10").
  • Geum 'Blazing Sunset' - Fully double, large scarlet blooms are borne over a long period in summer. Height and spread: 60cm (24").
  • Carnation 'Ever-blooming Mixed' (Hardy) - Richly fragrant blooms that are ideal for cutting. Height and spread: 30cm (12").
  • Armeria 'Mixed' - Long flowering plants with unusual ball shaped flower heads on thin wiry stems. Height: 50cm (20"). Spread: 30cm (12").
  • Delphinium 'Pacific Giants' - Excellent for adding structure and presence to the back of borders. Height: 150cm (60"). Spread: 75cm (30").
  • Leucanthemum x superbum 'White Knight' - Pure white single flowers are produced in constant supply throughout summer.
More info
    • 72 plug plants - 6 of each variety

    • Despatch: By end of May 2015
    • SAVE £39.89  
    • £59.88 £19.99

Primrose 'Irish Beauties Collection'

Primula vulgaris, Kennedy Primroses

  • The World's Hardiest Primrose
Often referred to as Kennedy Primroses, these striking Primulas are the products of 35 years of breeding. The results speak for themselves! These eye catching perennials are particularly tough, tolerating temperatures down to -15C (5F), resisting frost, snow and extreme wet conditions to make them the world’s hardiest Primrose. Each of Primrose ‘Irish Beauties Collection’ has darkly coloured green and purple-bronze foliage that contrasts with the shapely blooms. Once established they will virtually look after themselves, flowering twice as long as other varieties for an extended spring display. Height and spread: 20cm (8”).

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

More info
    • 3 jumbo plug plants

    • Despatch: By end of August 2015
    •  
    • £12.99
    • 6 jumbo plug plants

    • Despatch: By end of August 2015
    • SAVE £5.99  
    • £25.98 £19.99
    • 9 jumbo plug plants

    • Despatch: By end of August 2015
    • SAVE £13.98  
    • £38.97 £24.99

Geranium 'Blue Sybil'

Pelargonium, Rosebud Geranium

The full, rounded buds of Rosebud Geranium 'Blue Sybil' resemble dainty roses when they first break open, then cluster together to form a pretty posy. This vigorous, trailing variety has the exceptional garden performance of other ivy-leaf geraniums, but their unique flower form truly sets them apart. With regular deadheading, they will spill from windowboxes, containers, and hanging baskets, blooming profusely throughout the summer. Trails to: 45cm (18?).
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 5 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £9.99
    • 10 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £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").

More info
    • 5 jumbo plug plants

    • Despatch: By end of March 2015
    •  
    • £13.99
    • 10 jumbo plug plants

    • Despatch: By end of March 2015
    •  
    • £18.99

Geranium 'Skyrocket® Mixed'

Pelargonium

 Customer Rating

Wow - a new climbing geranium, growing 1.8m (6') in a season! Five of the brightest colours you've ever seen, set against fresh-green foliage. The extra long stems are smothered with rainbows of colour that make a surprisingly good cut flower! Geranium 'Skyrocket®' Mixed also makes a superb trailing specimen too – just perfect for window boxes and patio pots.

Precise German breeding has developed these top quality plants, so they are guaranteed to give a superb performance. Colours include: white, scarlet, dark red, orange and pink. Height: 1.8m (6'). Spread: 60cm (24”).


Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.

To make the most of your displays, try our exclusive Tower Pot™, specially designed to enable plants to climb easily.

More info
    • 5 jumbo plug plants

    • Despatch: By end of May 2015
    •  
    • £14.99
    • 5 jumbo plug plants + 1 tower pot pack

    • Despatch: By end of May 2015
    • SAVE £9.99  
    • £34.98 £24.99
    • 10 jumbo plug plants

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

Geranium 'Jackpot Mixed' F1 Hybrid

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • Stunning blooms will last all summer
These weather tolerant, F1 hybrid pelargoniums have more than enough vigour to ensure a spectacular, free flowering display throughout summer. Geranium 'Jackpot Mixed' produce masses of colourful single blooms on neat compact plants. Perfect for filling beds, borders and patio containers. Height: 40cm (16"). Spread: 35cm (14").
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 36 plug plants

    • Despatch: By end of April 2015
    •  
    • £7.99
    • 72 plug plants

    • Despatch: By end of April 2015
    • SAVE £2.99  
    • £12.99

Iris 'Re-Blooming Collection'

Bearded Iris

 Customer Rating

A beautiful selection of hardy, drought tolerant bearded iris with exceptional disease and insect resistance. With the first flowers appearing in spring, and a second flush in autumn, these really are outstanding hardy perennials; perfect for summer borders. These majestic, tall bearded iris flowers have a delicate scent and make impressive cut flowers for a vase indoors. Height: 90cm (36"). Spread: 30cm (12").


  • Collection comprises:
  • Iris 'Orange Harvest' - Rust orange flowers.
  • Iris 'Victoria Falls' - Light blue iris flowers.
  • Iris 'Cantina' - Violet blooms.
  • Iris 'Buckwheat' - Golden yellow petals.
  • Iris 'Pass the Wine' - Wine red flowers.
More info
    • 5 rhizomes (1 of each variety)

    • Despatch: By end of March 2015
    • SAVE £28.96  
    • £44.95 £15.99
    • 10 rhizomes (2 of each variety)

    • Despatch: By end of March 2015
    • SAVE £69.91  
    • £89.90 £19.99

Fuchsia 'Giants Collection'

 Customer Rating
  • T&M's best value fuchsias

Turbo-charged trailing fuchsias, that are guaranteed to give a stunning display. Giant frilled flowers of up to 10cm (4") across are produced throughout summer. The enormous blooms will leave your baskets, window boxes, Flower Pouches™ and containers literally dripping in a carnival of colour. Height: 30cm (12"). Spread: 45cm (18").

  • Collection comprises:
  • Fuchsia ‘Bella Rosella’ - Double blooms in shades of pink hang from cascading stems.
  • Fuchsia ‘Bicentennial’ - Flamboyant, frilly blooms in an unusual shade of orange.
  • Fuchsia 'Quasar' - Double mauve blooms with pure white sepals create a dramatic summer spectacle.
  • Fuchsia 'Seventh Heaven' - Bold flamingo pink flowers with contrasting pale pink sepals .
  • Fuchsia ‘Voodoo’ - Dark and mysterious double blooms, with fold upon fold of rich purple petals.

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


Useful links:

Read more on our blog: Choosing the right plants for your garden
More info
    • 5 Postiplug plants

    • Despatch: By end of April 2015
    • + FREE £5 voucher  
    • £6.99
    • 10 Postiplug plants

    • Despatch: By end of April 2015
    • + FREE £5 voucher  
    • £9.99
    • 20 Postiplug plants

    • Despatch: By end of April 2015
    • + FREE £5 voucher  
    • £16.99
    • 100 Postiplug plants

    • Despatch: By end of April 2015
    • + FREE £5 voucher  
    • £139.80 £59.99

Geranium 'Appleblossom Rosebud'

Pelargonium, Zonal Geranium, Zonal Pelargonium

  • 18 weeks of beautiful rosebud flowers
Captivating rosebud blooms open to reveal large, bicoloured clusters of fully double, pink and white flowers. This delightful zonal geranium has retained its popularity since the Victorian age and remains admired and sought after today. The long flowering period and drought tolerance of Geranium ‘Appleblossom’ make it ideal for creating an enchanting display in borders and patio containers that will last well into autumn. Height: 40cm (16”). Spread: 25cm (10”).
More info
    • 1 x 10.5cm potted plant

    • Despatch: By end of April 2015
    •  
    • £9.99
    • 3 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £12.99
    • 3 x 10.5cm potted plants

    • Despatch: By end of April 2015
    •  
    • £19.99
    • 6 jumbo plug plants

    • Despatch: By end of April 2015
    • SAVE £7.99  
    • £25.98 £17.99

Primrose 'Belarina Doubles Collection'

Primula

Say ‘goodbye’ to the winter blues with these little beauties! Primrose ‘Belarina Doubles Collection’ will cheer up your garden from spring through to early summer with their vibrant colour, delicate fragrance and evergreen rosettes of foliage. With exceptional hardiness, down to -25C (13F), these incredible perennials will come back year after year, no matter how cold the winter is! Like miniature roses, these double-flowered primroses look fabulous wherever you plant them, in pots, containers, beds or baskets, in sun or semi shade - and unlike other primroses they won’t need dead-heading! In this collection you will receive the following varieties: 'Nectarine', 'Amethyst Ice' and 'Pink Ice' Height: 15cm (6"). Spread: 20cm (8"). More info
    • 3 jumbo plug plants

    • Despatch: By end of August 2015
    •  
    • £12.99
    • 6 jumbo plug plants

    • Despatch: By end of August 2015
    • SAVE £8.99  
    • £25.98 £16.99
    • 9 jumbo plug plants

    • Despatch: By end of August 2015
    • SAVE £18.98  
    • £38.97 £19.99

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 plug plants - 3 of each variety

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