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 190 products.
 

Geranium 'Double Flowered Collection'

Hardy Geranium, Cranesbill

Enjoy our selection of the very best double-flowered cranesbills. Every bloom is a pretty posy of vibrant colour and unlike their single flowered relations, these hardy geraniums won't self seed, so the flowers last even longer. These cottage garden favourites will quickly blend with other herbaceous perennials to create colourful groundcover, and look equally attractive in borders or containers. Height: Up to 90cm (36"). Spread: 60cm (24").
  • Collection comprises 1 plant each of:
  • Geranium himalayense 'Birch Double' (left) - Vigorous and versatile, this superb cranesbill tolerates almost any situation; even full shade.
  • Geranium pratense 'Laura' (bottom right) - Long lasting, weather resistant, double white flowers are produced from June onwards on upright, downy stems.
  • Geranium pratense 'Summer Skies' (top right) - The double blooms of Geranium pratense 'Summer Skies' may look delicate but this hardy herbaceous perennial is tough and undemanding.
More info
    • 3 bareroot plants - 1 of each variety

    • Despatch: By end of February 2015
    • SAVE £19.98  
    • £38.97 £18.99
    • 6 bareroot plants - 2 of each variety

    • Despatch: By end of February 2015
    • SAVE £48.95  
    • £77.94 £28.99

Geranium pratense 'Laura'

Hardy Geranium, Meadow Cranesbill

Long lasting, weather resistant, double white flowers are produced from June onwards on upright, downy stems. The serrated leaves quickly create a mound of fresh green foliage that makes excellent groundcover for a cottage garden or perennial border. Unlike its single flowered relations, Geranium pratense 'Laura' does not self seed, making it easier to control. Height and spread: 60cm (24”).
More info
    • 1 bareroot plant

    • Despatch: By end of February 2015
    •  
    • £12.99

Geranium pratense 'Summer Skies'

Hardy Geranium, Meadow Cranesbill

Plant swathes of this gorgeous mauve-pink geranium in your cottage garden borders and enjoy dreamy summer skies all summer long. The double blooms of Geranium pratense 'Summer Skies' may look delicate but this hardy herbaceous perennial is tough and undemanding. Unlike its single flowered relations, this meadow cranesbill does not self seed, so the flowers last even longer. Height: 90cm (36”). Spread: 60cm (24”).
More info
    • 1 bareroot plant

    • Despatch: By end of February 2015
    •  
    • £12.99

Foxglove 'Illumination Pink'

Digitalis

 Customer Rating
  • Winner of Plant of the Year 2012 - RHS Chelsea Flower Show, Best new product at the Anglian Business Awards, Best new product at the Garden Retail awards
  • World Exclusive
  • T&M's own breeding

Thought to be an impossible hybridisation, this is the most spectacular foxglove you will have ever seen! Parentage from the little-known Isoplexis (Canary Island Foxglove) gives this exciting new Digitalis its fabulous tropical colouring. Being completely sterile Foxglove ‘Illumination’ won’t set seed, giving it an incredibly long flowering period. Unlike most foxgloves which are generally biennial, this half-hardy semi-evergreen is a true perennial so you will be able to enjoy its flowers for years to come. The exotic looking blooms are densely packed on sturdy stems, with many side branches, making a striking addition to summer borders. Height: 90cm (36"). Spread: 45cm (18").

Useful links:

'Impossible' Foxglove named Plant of the Year at RHS Chelsea Flower Show
Gardening news: Top 10 best-selling plants of 2012
Read Michael Perry's blog: Futuristic Foxgloves

More info
    • 1 x 9cm potted plant

    • Despatch: By end of March 2015
    •  
    • £9.99
    • 3 x 9cm potted plant

    • Despatch: By end of March 2015
    • SAVE £9.99  
    • £29.97 £19.98

Primrose 'Belarina Doubles Collection'

Primula

  • New in 2014
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 February 2015
    •  
    • £12.99
    • 6 jumbo plug plants

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

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

Heteropappus meyendorfii

Blue Chrysanthemum

  • New in 2014
  • Hundreds of electric blue blooms
Like a little blue Chrysanthemum, this fabulous plant produces an abundance of blooms from late summer, and continues throughout autumn. Heteropappus meyendorfii is a colourful, late flowering half hardy perennial with a lovely spreading habit. This pretty little daisy is perfect for filling gaps in containers and late summer borders when other plants are beginning to fade. Height: 30cm (12"). Spread: 45cm (18").
More info
    • 5 Postiplug plants

    • Despatch:
    •  
    • £8.99
    • Out of stock
    • 10 Postiplug plants

    • Despatch:
    •  
    • £17.98 £12.99
    • Out of stock

Geranium himalayense 'Birch Double'

Geranium himalayense 'Plenum', Hardy Geranium, Cranesbill

Vigorous and versatile, this superb cranesbill tolerates almost any situation; even full shade. A mass of double purple-pink blooms stand above the delicately serrated foliage which turns to shades of burnt red and orange in autumn. Geranium himalayense 'Birch Double' will quickly blend with other herbaceous perennials to create colourful groundcover and looks equally attractive in herbaceous borders and shady woodland gardens. Height: 25cm (10”). Spread: 60cm (24”). More info
    • 1 bareroot plant

    • Despatch: By end of February 2015
    •  
    • £12.99

Golden Lysimachia

Lysimachia punctata, Dotted Loosestrife

  • A towering, elegant plant for the border
Bring some sunshine to your borders with this resilient cottage-garden favourite. Neat clumps of tall, elegant stems with striking yellow flowers are borne from mid-summer through until early autumn. Golden Lysimachia is great for difficult clay soils and shadier parts of the garden, thriving in damp borders, bog gardens or at the margins of a pond. Grow dotted loosestrife in woodland gardens or informal areas for a burst of late summer colour! Height: 90cm (35"). Spread: 60cm (24").

SPECIAL OFFER - To get your plants at the reduced price, simply add your chosen pack size to your order and use order code TNS293Z 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 Thursday 20th November or whilst stock lasts. P&P charges will apply.

More info
    • 5 Postiplug plants

    • Despatch: By end of March 2015
    • £1.99 with order code TNS293Z  
    • £9.99
    • 10 Postiplug plants

    • Despatch: By end of March 2015
    • £2.99 with order code TNS293Z  
    • £14.99

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 plant

    • Despatch: By end of April 2015
    •  
    • £19.99
    • 2 x 12cm potted plants

    • Despatch: By end of April 2015
    •  
    • £29.99

Geranium 'Jackpot Mixed' F1 Hybrid (Garden-Ready)

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • New in 2014
  • Stunning blooms will last all summer

Our garden-ready plants are now even bigger and better! You can plant our garden-ready plants straight into the garden when they arrive - it couldn’t be easier! There’s no need to re-pot them or to grow them on - just plant and water them. Pretty soon you’ll be enjoying their wonderful displays of colour. If you haven’t got the time or the room to grow plants from small seedlings, then these are for you! You’re sure to get great results because we’ve done the crucial early growing for you. Just plant, water and enjoy!


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
    • 30 garden-ready plants

    • Despatch: By end of May 2015
    • Add a 2nd pack for just £5  
    • £14.99

Primrose 'Planets Mixed'

Primula

  • New in 2014
  • Distinctive new colours
Freshen up tired spring borders with these exciting new Primulas! Each shapely flower of Primrose ‘Planets Mixed’ has a contrasting inner ring of colour that makes them really stand out from crowd. This unique feature has never been seen before in Primroses - so it’s sure to attract attention. Grow them along path edges or in prominent patio containers where they can really be appreciated. Height and spread: 20cm (8").
More info
    • 12 plug plants

    • Despatch: By end of August 2015
    •  
    • £7.99
    • 24 plug plants

    • Despatch: By end of August 2015
    • SAVE £4.99  
    • £15.98 £10.99
    • 48 plug plants

    • Despatch: By end of August 2015
    • SAVE £14.97  
    • £31.96 £16.99

Bellis perennis 'Pomponette'

Daisy

 Customer Rating
A refreshing change to pansies and primroses that will brighten up the garden in spring, just when it needs it most. This hardy perennial daisy bear tightly double, quilled blooms in pretty shades of pink and white. Bellis perennis 'Pomponette' is perfect for filling beds, edging borders, and adding a splash of colour to window boxes and patio containers. Height and spread: 20cm (8").

 

Culinary note: Bellis flowers are edible.

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
    •  
    • £10.99
    • 72 plug plants

    • Despatch: By end of August 2015
    • Double up from 36 to 72 for £5 extra  
    • £21.98 £15.99