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.


For beautiful summer flowers browse our range of annual plants.



We have found 22 products.
 

Geranium 'Supreme Mixed' (Pre-Planted Basket)

Pelargonium, Ivy-leaved Geranium, Ivy-leaved Pelargonium

For hassle-free gardening, look no further than our pre-planted baskets for easy summer-long colour. We're always on the look out for ways to make life simpler for our gardening customers. So what could be easier than hanging baskets which are already planted up? We've taken the hard work out of creating wonderfully colourful displays - just order our pre-planted baskets of your favourite varieties and position them where you'll most enjoy their summer colour. Then all you need to do is water them and wait!

A kaleidoscope of vibrant pelargonium flowers fill the trailing stems of Geranium 'Supreme Mixed'. These stunning Ivy Leaf geraniums are perfect for creating long lasting hanging basket displays that won't disappoint. Height: 30cm (12"). Spread: 45cm (18").
Hanging basket diameter: 27cm (11in). 7.6 Litres.
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.

 

Garden ready pre-planted baskets
More info
    • 1 x geranium pre-planted basket

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

Blechnum brasiliense 'Volcano'

 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 July 2016
    •  
    • £14.99
    • 2 x 9cm potted blechnum plants

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

Sempervivum 'Mixed' (Large Plant)

Houseleek

Superb evergreen succulents form dense rosettes of foliage which meld together to create a living carpet. Sempervivum come in a fabulous range of forms and colours, with some even covered in spidery webbing. In summer, mature rosettes may produce panicles of star-shaped flowers. Although individual rosettes die after flowering, they are swiftly replaced by small offsets which quickly fill the gap. Commonly known as Houseleeks, these hardy perennials are extremely drought tolerant once established - perfect for planting in wall crevices, rockeries and alpine troughs. Height: 8cm (3"). Spread: 30cm (12").

 

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

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 2 x 1 litre potted sempervivum plants

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

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 geranium plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 3 geranium jumbo plug plants

    • Despatch:
    • SAVE £3  
    • £12.99 £9.99
    • Out of stock
    • 3 x 10.5cm potted geranium plants

    • Despatch:
    •  
    • £19.99
    • Out of stock
    • 6 geranium jumbo plug plants

    • Despatch:
    • SAVE £5  
    • £19.99 £14.99
    • Out of stock

Strelitzia 'Bird of Paradise'

Strelitzia

Bring a touch of the tropics to your garden with the exotic blooms of the Bird of Paradise plant. This striking plant makes a great seasonal summer addition, plunged into sunny borders or kept in a container on a sunny patio. Protected over winter plants will reach an impressive size, rivalling any plants you've seen on your sunshine holidays. As temperatures drop moving into autumn, bring the plant inside for a touch of summer all winter long. The stately blue green, deeply ribbed foliage makes an attractive foil for their magnificent flowers which resemble birds with bright plumage. The striking blooms will make for an impressive talking point on the patio! Height: 210cm (83"). Spread 100cm (36") More info
    • 1 x 13cm potted strelitzia plant

    • Despatch: By end of July 2016
    •  
    • £14.99
    • 2 x 13cm potted strelitzia plants

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

Geranium 'Custard Cream'

Pelargonium, Zonal Geranium, Zonal Pelargonium

  • The world's first true yellow geranium
For many years the elusive yellow geranium has been the holy grail of the plant world. There are plenty of dark cream varieties but few have captured that true yellow colour. Pelargonium enthusiasts will love Geranium 'Custard Cream' for its buttery yellow blooms and fabulous vigour. Created by the world's leading geranium breeder, this superb zonal pelargonium deserves a prominent place in your patio containers and borders this summer. Height: 30cm (12"). Spread: 25cm (10").
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
    • 1 x 10.5cm potted geranium plant

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 3 x 10.5cm potted geranium plant

    • Despatch:
    • SAVE *£19.98  
    • £38.97 £18.99
    • Out of stock

Arum Lily 'Spectrum Mixed'

Zantedeschia, Calla Lily

Bring some glamour and elegance into your garden with this beautiful collection of half-hardy Calla Lilies! The brightly coloured spathes are set against a backdrop of sumptuous, silver-spotted, heart shaped leaves. These exotic looking Arum Lillies are ideal for long lasting cut flower arrangements. Over-winter the rhizhomes in a warm, dry place and you can enjoy them year after year. Bulb size 12/14. Height: 60cm (24"). Spread: 20cm (8"). More info
    • 5 arum lily rhizomes

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 10 arum lily rhizomes

    • Despatch:
    • SAVE *£8.99  
    • £25.98 £16.99
    • Out of stock

Oxalis triangularis 'Burgundy Wine' (Large Plant)

Shamrock, Sorrel

The handsome ornamental foliage of this burgundy shamrock is rich burgundy-red with separate triangular shaped lobes. With an attractive summer display of tubular pink flowers, this frost tender perennial oxalis makes a delightful container plant for a conservatory or bright windowsill. In very mild areas Oxalis triangularis 'Burgundy' can be grown in sheltered borders or alpine gardens. Height: 20cm (8"). Spread: 30cm (12").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 2 litre potted oxalis plant

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 2 x 2 litre potted oxalis plants

    • Despatch: By end of July 2016
    •  
    • £16.99

Oxalis 'Sunny' (Large Plant)

Shamrock, Sorrel

The Burgundy Shamrock is versatile, and can be used in summer patio pots, bedding, borders, rockeries, or beneath trees and shrubs. Oxalis 'Sunny' is particuarly handsome, with leaves carrying in burgundy and ruby colourings.

The rich foliage is accompanied by tubular pink flowers from spring to summer. In very mild areas, Oxalis can be grown in sheltered borders or patio pots. The spring foliage looks especially pretty against spring bulbs. Height: 20cm (8"). Spread: 30cm (12").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 2 litre potted oxalis plant

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 2 x 2 litre potted oxalis plants

    • Despatch: By end of July 2016
    •  
    • £16.99

Tropaeolum speciosum

Flame Nasturtium, Flame Flower, Flame Creeper

Exotic, spurred blooms in bright, vermillion red appear throughout summer in a rich explosion of colour. The vibrant blooms are followed by spherical blue fruits set against a backdrop of attractive dark green foliage. Tropaeolum speciosum is an intriguing climbing perennial that prefers a cool, sheltered position. This sought after plant creates a spectacular sight when grown through mature shrubs or scrambling over low walls. Height: 3m (10'). Spread: 1.2m (4').
More info
    • 2 bare root tropaeolum speciosum plants

    • Despatch: By end of February 2017
    •  
    • £12.99
    • 4 bare root tropaeolum speciosum plants

    • Despatch: By end of February 2017
    •  
    • £19.99

Chinese Foxglove

Rehmannia elata, Rehmannia angulata

  • Blooms from May to November
This colourful Chinese Foxglove is named for its foxglove-like flowers, and it will repeat bloom all through the summer - unlike digitalis - and with a much showier flower! Rehmannia makes a superb choice for sunny borders, containers or a cool greenhouse, adding a touch of the exotic to your garden from late spring through until autumn. Chinese foxgloves are best over-wintered in a protected position with a minimum temperature of 5°C. Height: 90cm (36"). Spread: 50cm (20").
More info
    • 3 Chinese foxglove Postiplug plants

    • Despatch: By end of August 2016
    •  
    • £12.99
    • 6 Chinese foxglove Postiplug plants

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

Geranium maderense

Giant Herb Robert, Madeira Cranesbill

  • RHS Award of Garden Merit
  • The palm tree geranium
Geranium maderense is a magnificent tender perennial. The Madeira Cranesbill is the largest of the Geranium species, and certainly one of the most impressive, reaching a height of 1.5m (4',9"). Although perennial, it often acts as a biennial, producing pretty magenta pink blooms in its second year. But you won't mind the wait - it will give you time to appreciate the exotic-looking, dissected, evergreen foliage that radiates from a stout central trunk. This spectacular RHS AGM species will need some winter protection so it is best grown in the conservatory or a large patio container which can be moved to a frost free position in winter. Height: 150cm (59"). Spread: 100cm (39").
More info
    • 1 x 12cm potted geranium plant

    • Despatch:
    •  
    • £19.99
    • Out of stock
    • 2 x 12cm potted geranium plants

    • Despatch:
    •  
    • £29.99
    • Out of stock