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 61 products.
 

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 July 2015
    • + FREE £5 voucher  
    • £8.99
    • 6 heuchera Postiplugs

    • Despatch: By end of August 2015
    • + FREE £5 voucher  
    • £12.99

Rudbeckia 'Summerina Collection'

Coneflower, Black-eyed Susan

  • New in 2015
  • T&M Exclusive
  • New perennial rudbeckia for borders

Rudbeckia 'Summerina' Collection is exclusive to Thompson & Morgan, a near impossible breeding breakthrough - the crossing of an annual rudbeckia and a perennial echinacea! The result: tough, hardy perennial rudbeckias that return year on year to offer the stronger and longer flowering habit of annual varieties. This three colour mix is ideal for extending the life of your summer border - the plants go on to provide much needed autumn colour right up to the first hard frosts. Height and spread: 60cm (24").

More info
    • 3 rudbeckia jumbo plug plants

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

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

Giant Geranium Collection

Pelargonium

  • The biggest geraniums you'll ever find

Enormous heads of bloom with exceptional weather resistance make these giant geraniums stand out from the rest! Raised from cuttings, these plants have increased vigour and abundant flowers that persist throughout summer if deadheaded regularly. Fantastic for creating dramatic patio displays or filling gaps in borders. Height: 60cm (24"). Spread: 50cm (20").


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.
  • Collection comprises:
  • Geranium 'Octavia Hill' - Bold scarlet
  • Geranium 'Salmon Princess' - Delicate candy pink.
  • Geranium 'Sassa' - Dark pink.
  • Geranium 'Flower Fairy Berry' - Rich cerise pink.
  • Geranium 'Maestro Salmon' - Dark pink.
More info
    • 5 geranium jumbo plug plants - 1 of each variety

    • Despatch: By end of March 2016
    •  
    • £9.99
    • 15 geranium jumbo plug plants - 3 of each variety

    • Despatch: By end of March 2016
    •  
    • £19.99
    • 30 geranium jumbo plug plants

    • Despatch: By end of March 2016
    • Save £53.95  
    • £83.94 £29.99
    • 100 geranium jumbo plug plants - 20 of each variety

    • Despatch: By end of March 2016
    • Save £129.81  
    • £199.80 £69.99

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

Delphinium 'Pacific Giants'

 Customer Rating
A distinguished delphinium producing strong spikes of semi-double blooms in a dreamy blend of pink, lilac, purple, violet-blue, sky-blue and white. Delphinium 'Pacific Giants' are excellent for cutting and add structure and presence to the back of cottage garden perennial borders. Height: 150cm (60"). Spread: 75cm (30").
More info
    • 6 delphinium plug plants

    • Despatch: By end of August 2015
    •  
    • £5.99

Geranium 'Summer Sunrise'

Pelargonium

  • Plant these unique climbing geraniums and grow your plants upwards!
Create a pillar of colour on your patio with this fabulous climbing geranium! Train the long stems onto an obelisk to enjoy a fervent display of double pelargonium flowers as they reach towards the sky. Ivy leaf Geranium 'Summer Sunrise' is perfect for creating a spectacular focal point, particularly in smaller gardens where space is at a premium. Height: 120cm (47"). Spread: 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 geranium jumbo plug plants

    • Despatch: By end of March 2016
    •  
    • £14.99
    • 5 geranium jumbo plug plants + 1 Tower Pot pack

    • Despatch: By end of March 2016
    •  
    • £24.99
    • 10 geranium jumbo plug plants

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

Chrysanthemum 'Bumper Pack'

Subtle autumnal shades harmonise with striking, bold colours in this outstanding chrysanthemum collection. A bold combination of tall, half hardy varieties with reflexed and incurved petals, mixed with lower growing, hardy chrysanthemums that form neat mounds of colour. Savour the colourful shades of these magnificent perennials in your autumn garden when summer bedding plants have faded away. Their vibrant blooms also make excellent and long lasting cut flowers. Height: Up to 90cm (36"). Spread: 45cm (18").


Chrysanthemum collection contains 5 plants each of:
Incurved Mixed – Sturdy stems bear rounded blooms with magnificent incurved petals.
Hardy Patio Mixed – Well branched plants produce rounded domes of colour.
Decorative Mixed – Backward facing petals create colourful flower heads on strong stems.


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 15 chrysanthemum Postiplug plants - 5 of each variety

    • Despatch: By end of March 2016
    • Save £10.98  
    • £29.97 £18.99

Delphinium 'Rising Stars Mixed'

  • Best in class for delphiniums
We've given our customers the chance to get their hands on some very new, very different delphiniums from the world-famous 'New Zealand Hybrids' programme. There are far too many hybrids produced for our supplier to sell, so we've grouped our favourites into an exclusive 'Breeders Mixture', aptly named 'Rising Stars'! This exciting mix of delphinium flowers blends picotees, pastels, singles, doubles and frosted hybrids for a spectacular, towering display. You can even cut some blooms for a striking flower arrangement indoors. Height: 120cm (47"). Spread: 75cm (30").
More info
    • 4 delphinium Postiplug plants

    • Despatch: By end of July 2015
    •  
    • £9.99
    • 8 delphinium Postiplug plants

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

Anemone x hybrida 'Honorine Jobert' (Large Plant)

Japanese Anemone

A classic Anemone, which is incredibly easy to grow, and gives impressive displays from late summer to autumn, coming back every year. Anemone x hybrida 'Honorine Jobert'will perform best in a shady garden, and will spread quickly and easily.

Japanese Anemones are reliable garden plants, which are ideal for first time gardeners. Plants will last for years in the garden, and are very rabbit resistant. Height and Spread: 90cm (35").

More info
    • 1 x 1 litre potted anemone plant

    • Despatch: By end of July 2015
    •  
    • £9.99
    • 2 x 1 litre potted anemone plants

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

Lewisia 'Elise Mixed'

  • First lewisia to repeat flower throughout summer
Masses of starry flowers in a range of fruity colours, including stripes and picotees adorn slender stems above neat rosettes of fleshy leaves. Traditionally grown as perennials in alpine houses, new breeding has brought us Lewisia 'Elise Mixed' which flowers in its first year, making a bright and attractive annual bedding plant! Winner of a Fleuroselect Gold Medal, these exceptional plants repeat flower throughout summer, lighting up beds, borders, containers and rock gardens. Tolerating heat and drought well, Lewisia is also perfectly happy with cooler temperatures and will overwinter with protection from wet weather. Height: 25cm (10"). Spread: 30cm (12").
More info
    • 24 lewisia plug plants

    • Despatch: By end of August 2015
    •  
    • £16.99
    • 48 lewisia plug plants

    • Despatch: By end of August 2015
    •  
    • £21.99

Actaea cordifolia (Large Plant)

Cimicifuga racemosa var. cordifolia, Bugbane, Cohosh

Cimicifuga is an attractive border perennial with an exotic appearance. Actaea has a robust habit, and can fill a gap in the border with its fancy foliage and summer flower spikes, which are tall and imposing.

The flower spikes of Actaea are made up of many tiny florets, and these have a spicy fragrance. Cimicifuga is a long-lasting plant, surviving for many years, and is very useful for difficult situations, such as cold, wet corners of the garden. Height: 1m (39"). Spread: 50cm (20").

More info
    • 1 x 1 litre potted actaea plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted actaea plants

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

Chrysanthemum 'Incurved Mixed'

Sturdy stems bear rounded blooms with magnificent incurved petals that are perfect for long-lasting flower arrangements. Savour the colour of these magnificent half hardy chrysanthemums in your autumn garden when summer bedding plants have faded away. This vibrant collection will reward you with flamboyant blooms right through until the frosts. Disbudding the stems will produce fewer, but larger blooms, or let them grow naturally for a mass of smaller flowers. Height: 90cm (36"). Spread: 45cm (18").


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 5 chrysanthemum Postiplug plants

    • Despatch: By end of March 2016
    •  
    • £9.99