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.


For beautiful summer flowers browse our range of annual plants.



We have found 130 products.
 

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: By end of May 2016
    •  
    • £9.99
    • 3 geranium jumbo plug plants

    • Despatch: By end of April 2016
    • SAVE £3  
    • £12.99 £9.99
    • 3 x 10.5cm potted geranium plants

    • Despatch: By end of May 2016
    •  
    • £19.99
    • 6 geranium jumbo plug plants

    • Despatch: By end of April 2016
    • SAVE £5  
    • £19.99 £14.99

Fuchsia 'White King'

The purest white blooms of any double-flowered variety, Fuchsia 'White King' is ideal for brightening shady corners where the pale blooms will seemingly glow in the dark! The huge 12cm (5") blooms on these trailing fuchsia plants are the perfect showy addition for hanging baskets and tall containers. Easy-care fuchsias thrive in sun or shade. Height and spread: 50cm (20in).

Useful links:

How to grow fuchsias


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

More info
    • 5 fuchsia Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 10 fuchsia Postiplug plants

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

Dianthus 'Crimson Rim'

Carnation

  • At last - a new carnation with a traditional fragrance

This stunning hardy Carnation bucks the modern trend for flashy flower colours at the expense of their fragrance. Dianthus 'Crimson Rim' combines elegant pristine white blooms with a stylish raspberry edge and a wonderful rich clove fragrance. This clump forming perennial is undemanding and well behaved making it perfect for the front of borders. And with a such a free flowering habit you'll have plenty of stems to spare for a vase indoors. Height: 40cm (16"). Spread: 30cm (12").


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

 

More info
    • 5 dianthus jumbo plug plants

    • Despatch: By end of April 2016
    •  
    • £11.99
    • 10 dianthus jumbo plug plants

    • Despatch: By end of April 2016
    •  
    • £17.99
    • 20 dianthus jumbo plug plants

    • Despatch: By end of April 2016
    • SAVE £22.97  
    • £47.96 £24.99

Fuchsia 'Beauty Queen'

 Customer Rating
  • The largest flowered-hardy fuchsia

Fuchsia 'Beauty Queen' has some of the largest fuchsia flowers we've seen! The dazzling white blooms have brilliant pink sepals that make a dramatic contrast. This compact hardy fuchsia is smothered with enormous blooms all summer long making it ideal for bringing a bright splash of colour to patio pots and borders. Height and spread: 60cm (24").


Useful links:

How to grow fuchsias


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

More info
    • 3 fuchsia Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 9 fuchsia Postiplug plants

    • Despatch: By end of April 2016
    • SAVE £4.99  
    • £19.98 £14.99

Alstroemeria 'Inca Smile'

Peruvian Lily, Alstroemeria 'Koncasmile'

The exotic, orchid-like blooms of Alstroemeria 'Inca Smile' have a resilience and longevity that belies their delicate appearance. This stunning Peruvian Lily blooms for up to 5 months with the largest Alstroemeria flowers that we have ever seen - almost twice the size of other varieties. With a neat semi dwarf habit, 'Inca Smile' is perfectly proportioned for containers or borders, and makes a superb cut flower too. Height: 35cm (14"). Spread: 25cm (10").
More info
    • 1 x 7cm alstroemeria potted plant

    • Despatch: By end of April 2016
    •  
    • £14.99
    • 3 x 7cm alstroemeria potted plant

    • Despatch: By end of April 2016
    • SAVE £19.98  
    • £44.97 £24.99

Dianthus 'Blackjack'

Carnation

New modern cut-flower quality carnation plants packing the heavenly scent of antique varieties! Modern breeding work has seen the unmistakable scent of carnations all but disappear in the search for longer, cut flower-quality stems. Fortunately Carnation 'Blackjack' bucks that trend. Not only does it offer a unique colour combination, the near black blooms also bring punchy clove-like fragrance to the garden. A perfect border carnation, it also performs well in containers. Originally planned for the commercial cut flower market, you won't be disappointed by the endless supply of fresh stems either! Keep the colour and scent in the garden or use Dianthus 'Blackjack' as your very own cut flower carnation. Height and spread: 50cm (20").


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

More info
    • 5 dianthus pencil plug plants

    • Despatch: By end of April 2016
    •  
    • £13.99
    • 10 dianthus pencil plug plants

    • Despatch: By end of April 2016
    • SAVE £7.99  
    • £27.98 £19.99

Heucherella 'Trailing Collection'

  • New hanging basket plant!

A cross between Heuchera and Tiarella, these trailing hardy perennials look fabulous billowing out of hanging baskets, window boxes and patio containers, where the broad-lobed, evergreen leaves provide all-year-round interest! Grow them alone for a fountain of foliage, or in mixed baskets to add texture and contrast. Vigorous and easy to grow, Heucherella 'Trailing Collection' also makes a fantastic groundcover plant for sun or part shade. Height: 25cm (10"). Spread: 60cm (24").


  • Collection comprises:
  • Heucherella 'Crimson Cascade' - Wonderful green to copper-red foliage with contrasting dark veins.
  • Heucherella 'Yellowstone Falls' - Striking lime green leaves with crimson markings.
  • Heucherella 'Redstone Falls' - Vibrant green and ruby red leaves creating a mixture of autumnal colours which change with the seasons.
More info
    • 3 heucherella jumbo plug plants

    • Despatch: By end of March 2016
    •  
    • £14.99
    • 6 heucherella jumbo plug plants

    • Despatch: By end of March 2016
    • Save £9.99  
    • £29.98 £19.99

Phlox paniculata 'Peppermint Twist' (Large Plant)

Perennial Phlox

Delightfully dwarf, this perennial Phlox reaches just 45cm (18") tall! Charming pink and white pinwheel blooms will fill the air with the most exquisite fragrance. With its neat, bushy habit, Phlox paniculata 'Peppermint Twist' is perfect for patio containers - plant it next to a doorway where you can really appreciate their fragrance. Highly attractive to pollinating insects, this pretty variety will brighten up the front of borders, and also makes a pleasing cut flower. Height and spread: 45cm (18").

 

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

    • Despatch: By end of February 2016
    •  
    • £12.99
    • 2 x 2 litre potted phlox plants

    • Despatch: By end of February 2016
    • SAVE £5.99  
    • £25.98 £19.99

Ageratum houstonianum 'Pincushion Mixed'

Floss Flower

  • Compact plants ideal for front of border
  • 3 distinctive colours
  • More flowers than foliage!

Here we have the ideal planting solution for the front of bedding schemes, pathway edging or paving crack filler. Ageratum plants are unsung heroes of the bedding world, producing more flower than leaf. The dwarf habit of Ageratum 'Pincushion Mixed' makes this colour collection a useful garden addition where you want to fill left over space or contain other plants in a defined border of colour. The fluffy, weather-resistant flowers, in shades of blue, pink and white are particularly attractive to butterflies. Add these long flowering bedding plants in between larger container plants for pots of colour all summer. Height: 15cm (6"). Spread: 20cm (8").
More info
    • 24 ageratum plug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 48 ageratum plug plants

    • Despatch: By end of April 2016
    • SAVE £1.99  
    • £19.98 £17.99

Gentiana scabra 'Royal Stripes'

  • Unique striped blooms
You'll be familiar with blue flowering gentian plants and you've likely seen white flowered forms, but you'll be blown away by the blue and white striped flowers of Gentiana 'Royal Stripes'. This rare new variety really brings a wow factor to the genus. Look closer at the impressive blooms and you'll also see vibrant green freckling standing out on a white canvas. Whether you use these compact herbaceous perennial plants in patio pots, borders or rockery displays, the carpet of colour is sure to attract attention from friends and family as well as bees and other pollinators. In return of a little deadheading, flowers will just keep on coming from early June through to October. Ideal for dappled shade, try Gentiana ‘Royal Stripes’ under trees and shrubs for a vibrant lift to your beds and borders. Height and spread: 25cm (10")
More info
    • 1 x 10.5cm potted gentiana plant

    • Despatch: By end of May 2016
    •  
    • £14.99
    • 2 x 10.5cm potted gentiana plants

    • Despatch: By end of May 2016
    • SAVE £4.99  
    • £29.98 £24.99

Gaura lindheimeri 'Sparkle White'

This stunning hardy perennial makes a fabulous border plant! Its graceful, slender stems are topped with a flurry of dazzling white, starry blooms that still look fresh and airy at the end of summer. This bushy, clump forming variety has a neat, compact habit that makes it perfect for the front of sunny borders or edging paths as a mini hedge. Once established, Gaura lindheimeri 'Sparkle White' even copes well during periods of drought. Height and spread: 45cm (18").
More info
    • 24 gaura plug plants

    • Despatch: By end of April 2016
    •  
    • £13.99
    • 48 gaura plug plants

    • Despatch: By end of April 2016
    • SAVE £7.99  
    • £27.99 £19.99

Geranium 'White Rose'

Pelargonium, Rosebud Geranium

The full, rounded buds of Rosebud Geranium 'White Rose' resemble dainty crystal white 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 geranium jumbo plug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 10 geranium jumbo plug plants

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