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 140 products.
 

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

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

Wallflower 'Dwarf Scented Mixed'

Erysimum, Cheiranthus

Sometimes the old methods are the best, and that’s exactly why we’ve added good, old fashioned bareroot wallflower plants to our range. Wallflower ‘Dwarf scented Mixed’ can be planted straight out into beds, containers and borders to create a fantastic tapestry of scented colour in the following spring. Tough, compact and reliable - this short lived perennial is tough enough to cope in even the poorest of soils. Height: 40cm (16"). Spread: 30cm (12"). More info
    • 20 bare root plants

    • Despatch: By end of October 2015
    •  
    • £9.99
    • 40 bare root plants

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

Pansy 'Matrix™ Mixed'

Viola x wittrockiana

 Customer Rating
  • Best In Class for winter pansy - click here for details
  • 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. For more details about edible flowers click here.

More info
    • 36 plug plants

    • Despatch: By end of August 2015
    • + FREE £5 voucher  
    • £6.99
    • 72 plug plants

    • Despatch: By end of August 2015
    • SAVE £3.99 + FREE £5 voucher  
    • £13.98 £9.99

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

Phlox Collection (Creeping)

Phlox subulata, Phlox douglasii, Moss Phlox

 Customer Rating
  • 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 Postiplug plants

    • Despatch: By end of April 2015
    •  
    • £13.99
    • 10 Postiplug plants

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

Hellebore 'White Spotted'

  • The very best hellebores that money can buy

Exquisite cup shaped, spotted pink blooms with a pure white edge appear like jewels in dull winter borders. Hellebore ‘White Spotted’ is the essential low maintenance plant for any difficult, shady border where they will form clumps of leathery evergreen foliage for a year round garden presence. These resilient hardy perennials are vigorous and long lived, lasting for 20 years or more. Height and spread: 45cm (18").



Thompson & Morgan inherited the highly-commended hellebore breeding programme of Elizabeth Strangman when she retired and we are immensely proud to carry on her legacy, perfecting the amazing colours and forms of this wonderful perennial.
More info
    • 1 x 9cm potted plant

    • Despatch:
    •  
    • £13.99
    • Out of stock

Hellebore 'Yellow Spotted'

  • The very best hellebores that money can buy

Exquisite cup shaped, pale gold blooms with purple pink markings appear like jewels in dull winter borders. Hellebore ‘Yellow Spotted’ is the essential low maintenance plant for any difficult, shady border where they will form clumps of leathery evergreen foliage for a year round garden presence. These resilient hardy perennials are vigorous and long lived, lasting for 20 years or more. Height and spread: 45cm (18").



Thompson & Morgan inherited the highly-commended hellebore breeding programme of Elizabeth Strangman when she retired and we are immensely proud to carry on her legacy, perfecting the amazing colours and forms of this wonderful perennial.
More info
    • 1 x 9cm potted plant

    • Despatch: By end of March 2015
    •  
    • £13.99

Wallflower 'Winter Party'

Erysimum, Cheiranthus

The richly fragrant blooms of Wallflower ‘Winter Party’ create a tapestry of colour in shades of burnt orange and mauve. This evergreen erysimum hybrid has a neat, compact habit making it perfect for beds, borders and containers. 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
    • 6 jumbo plug plants

    • Despatch: By end of April 2015
    •  
    • £14.99
    • 12 jumbo plug plants

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