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 660 products.
 

Bergenia 'Dragonfly Sakura' (Large Plant)

Reliable evergreen ground cover with astonishing winter colour! The glossy, rounded foliage of Bergenia 'Dragonfly Sakura' turns from lush green to rich purple-black throughout the coldest months. From March, the dark foliage is the perfect backdrop for the candy pink flowers that rise above it. The pretty blooms provide invaluable food for pollinating insects early in the year, and make dainty cut flowers too. Elephant Ears is a reliable, no maintenance hardy perennial - perfect for the front of cottage garden borders. Height: 25cm (10"). Spread: 30cm (12").

 

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

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 2 litre potted bergenia plants

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

Perennial Ground Cover Collection

Our ground cover collection of hardy herbaceous perennials brings so many benefits, which all lead to one thing: low maintenance gardening. We've selected some of our best low-growing perennials to offer a range of planting solutions. Use them as front of border plants in large sunny borders or set them in dappled shade as underplanting to trees and shrubs. You can even try them in pots and use your new perennial containers alongside seasonal pots. Every plant in the mix offers a controlled spreading habit, helping to quickly fill borders, cover soils and prevent weeds taking hold. And less weeding leads to more time spent enjoying your garden!


  • Perennial Ground Cover Collection comprises:
  • Arabis 'Lotti Pink' - A spring flowering, cushion-like perennial.
  • Armeria 'Ballerina Mixed' - Dense cushions of bright green foliage produce spherical flower heads set atop sturdy upright stems.
  • Dianthus deltoides 'Red' - Neat clumps of silver green foliage that makes stunning ground cover.
  • Campanula 'Dwarf Blue' - Cushion-like plants, which are smothered in violet-blue flowers through the summer months.
  • Aubrieta 'Mixed' - These tough little plants will thrive in the poorest of soils, forming dense mats of evergreen foliage.
  • Erigeron 'Stallone' - This cheery clump forming perennial enjoys light sandy soils, making it ideal for coastal gardens.

Powerliner® plugs are well established, mature plugs which can be potted on or can be planted straight into the border or containers. Each plug module is 6.5cm in diameter.
More info
    • 6 Powerliner plug plants - 1 of each variety

    • Despatch: By end of October 2016
    •  
    • £8.99
    • 12 Powerliner plug plants - 2 of each variety

    • Despatch: By end of October 2016
    •  
    • £12.99

Lobelia cardinalis 'Queen Victoria' (Large Plant)

Tall spikes of deep maroon foliage topped by glowing scarlet blooms bring a welcome splash of late summer colour, when many flowers have already faded. This exotic looking, short lived perennial is ideal for filling gaps in damp borders, and looks spectacular planted beside ponds and streams. Height: 90cm (36"). Spread: 30cm (12").

 

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

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 1 x 3 litre potted lobelia plant

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 1 litre potted lobelia plants

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 2 x 3 litre potted lobelia plants

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

Delphinium grandiflorum Blue Butterfly (Large Plant)

 

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

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1 litre potted delphinium plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Nepeta racemosa Walker's Low (Large Plant)

 

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

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1 litre potted nepeta plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Pansy 'Matrix™ Mixed' (Garden Ready)

Viola x wittrockiana

  • The fast-track to a hassle-free garden - just plant, water and enjoy!
  • Quality plants delivered to your door, hardened off and ready to plant out
  • Fully-grown, super-robust, healthy plants
Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.

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. The crystallised petals are great decorations for cakes and cookies, or they can be added straight to green salads for an injection of colour. For more details about edible flowers click here.

 

Garden ready special offer
More info
    • 30 pansy garden ready plants

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

Polyanthus 'Firecracker' (Garden Ready)

Primula

  • The fast-track to a hassle-free garden - just plant, water and enjoy!
  • Quality plants delivered to your door, hardened off and ready to plant out
  • Fully-grown, super-robust, healthy plants

Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.


An eye-catching new Polyanthus bearing yellow blooms with a fiery orange-red edge. These long-lasting flowers are borne on strong, stout stems above rosettes of semi-evergreen foliage. Versatile and easy to grow, Polyanthus 'Firecracker' is perfect for edging borders and brightening up spring patio containers. Height and spread: 23cm (9").


Culinary note: Some parts of these flowers are edible. Try the sweet tasting petals on top of salads or even pancakes, crystallise them for use as cake decorations too. For more details about edible flowers click here.

 

Garden ready special offer
More info
    • 30 polyanthus garden ready plants

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

Clematis 'Picotee Kiss'

  • Large blooms for big impact
  • Each petal like a lipstick kiss!
  • Flowers in spring and again in summer

One of the finest hardy clematis introductions in recent years, expect Clematis ‘Picotee Kiss’ to be a future classic. The dazzling pink picotee-edged blooms, each up to 15cm (6in) across, have amazed us on the trial ground, adorning the plants in abundance - once in spring and again in summer! Enjoy the first flush of blooms through May-June, then watch the plants flush into colour again though July-September. Each petal looks like a lipstick kiss! Be one of the first UK gardeners to cover walls, fences and trellis with the stand-out flowers of Clematis ‘Picotee Kiss’. Height: 210cm (83"). Spread 100cm (39"). Pruning Group 2.
More info
    • 1 x 7cm potted clematis plant

    • Despatch: By end of September 2016
    •  
    • £13.99 £9.99
    • 2 x 7cm potted clematis plants

    • Despatch: By end of September 2016
    •  
    • £19.99 £14.99

Stock 'Most Scented Mix' (Garden Ready)

Matthiola incana, Gillyflower

  • The fast-track to a hassle-free garden - just plant, water and enjoy!
  • Quality plants delivered to your door, hardened off and ready to plant out
  • Fully-grown, super-robust, healthy plants
Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.

Specially selected for their strong and spicy fragrance and fabulous colours! Start growing Stock 'Most Scented Mix' in autumn for spring borders that will look and smell incredible. These pretty Gillyflowers make superb bedding plants and don't forget to cut some for a vase indoors too. Height: 30cm (12"). Spread: 20cm (8").

 

Garden ready special offer
More info
    • 30 stock garden ready plants

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

Salvia x jamensis 'Hot Lips' (Large Plant)

Salvia microphylla 'Hot Lips'

Spice up your summer patio pots with Salvia 'Hot Lips'. Naturally bushy plants boast eye-catching flower spikes with open-mouthed, bicolour blooms. In particularly hot weather look out for individual flowers in solid red or solid white. The aromatic foliage has a fine blackcurrant fragrance that only adds to its charm. This showy ornamental sage is perfect for cottage garden borders and containers, or incorporated into bedding schemes for a vibrant summer display. Although perennial, this half hardy Salvia will appreciate some protection from winter weather. Height: 90cm (35"). Spread: 60cm (24").

 

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

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 2 x 2 litre potted salvia plants

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

Delosperma 'Hardy Mixed'

Hardy Ice Plant

 Customer Rating
  • Vigorous ground cover, even in the driest of soils

Unique, versatile and vibrant! The fleshy, drought tolerant creeping stems of these hardy Ice Plants make ideal ground cover on sunny banks and poor stony soils. The showy daisy-like flowers of Delosperma 'Hardy Mixed' create a carpet of intense colour, in exclusive new shades that will stop you in your tracks. Fantastic for those hot, dry problem areas where many other plants would fail to establish. Height: 10cm (4"). Spread: 60cm (24").

More info
    • 5 delosperma jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 10 delosperma jumbo plug plants

    • Despatch: By end of September 2016
    • SAVE £3  
    • £14.99 £11.99

Erigeron glaucus 'Sea Breeze' (Large Plant)

Fleabane

A low-growing, carpeting plant for coastal locations, or any difficult, exposed position in the garden. The lilac blooms come easily, and the Beach Aster or Fleabane as it is commonly known, looks great tumbling over a rock wall, or growing between cracks in paving.

Erigeron plants are tough and easy to establish, some may even refer to them as 'foolproof'. The Beach Aster is long-lived too, will flower right through the summer, and self-seed if you'd like it to! Height: 30cm (12"). Spread: 45cm (18").

 

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

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 2 x 1 litre potted erigeron plants

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