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.


For beautiful summer flowers browse our range of annual plants.



We have found 53 products.
 

Pachysandra terminalis 'Green Carpet' (Large Plant)

Pachysandra terminalis 'Green Carpet' is an excellent plant for creating a carpet of green beneath trees and shrubs. Plants are mat-forming, and excellent at stopping weeds from taking hold. The evergreen foliage is textured, decorative and plays host to spikes of misty white flowers from early summer.

Easy to grow ground cover for awkward, shady borders, Pachysandra is the perfect choice for low-maintenance gardening. Plants stay low at just 15cm (6") and are ideal for small, oddly-shaped areas, edgings or patio containers. Height: 15cm (6"). Spread: up to 1m (39").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 9cm potted pachysandra plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 9cm potted pachysandra plants

    • Despatch:
    •  
    • £16.99
    • Out of stock

Pachysandra terminalis (Large Plant)

Forming a dense mat of glossy evergreen leaves, Japanese Spurge is an ideal groundcover plant for growing in areas between shrubs and trees to prevent weeds from getting the chance to grow. The interesting foliage grows in rosettes of green toothed leaves which each produce a spike of small white flowers in early summer. Requiring virtually no aftercare once planted, this perennial plant can be allowed to spread wherever you let it, leaving you to enjoy your garden without having to worry about it. Height: 20cm (8"). Spread: 150cm (59").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 9cm potted pachysandra plant

    • Despatch: Within 28 days
    •  
    • £7.99
    • 2 x 9cm potted pachysandra plants

    • Despatch: Within 28 days
    •  
    • £11.99

Blechnum brasiliense 'Volcano'

Dwarf Brazilian Tree Fern, Hard Fern

 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 2017
    •  
    • £14.99
    • 2 x 9cm potted blechnum plants

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

Red Hot Poker 'Fire Dance' (Large Plant)

Kniphofia

The Red Hot Poker is instantly recognisable. This reliable perennial is an old favourite for mixed herbaceous borders. Kniphofia 'Fire Dance' is a particularly useful selection, as it's extremely cold hardy. The scarlet and yellow blooms rise above dense clumps of evergreen foliage in summer.Plants also prove remarkably rabbit proof and these robust plants are loved by bees and butterflies too. Height: 50cm (20") Spread: 60cm (24").

 

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

    • Despatch: Within 28 days
    •  
    • £12.99
    • 2 x 1 litre potted red hot poker plants

    • Despatch: Within 28 days
    •  
    • £19.99

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: Within 28 days
    •  
    • £12.99
    • 2 x 2 litre potted bergenia plants

    • Despatch: Within 28 days
    •  
    • £19.99

Ajuga reptans 'Black Scallop' (Large Plant)

Ajuga reptans 'Black Scallop' is a highly attractive variety of Bugle. The violet blue flower-spikes appear from late spring against a dense matt of glossy, liquorice-black foliage. This dark leaved perennial is more sun tolerant than many cultivars, with the foliage becoming blacker when grown in full sun. A superb groundcover plant, Bugle is a tough and reliable evergreen that copes in almost any soil conditions. Ajuga reptans 'Black Scallop' is particularly effective at the front of borders, creeping through rockeries or as groundcover in wildlife gardens where it will attract pollinating insects. Height: 15cm (6"). Spread: 60cm (24").

 

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

    • Despatch: Within 28 days
    •  
    • £7.99
    • 2 x 1 litre potted ajuga plants

    • Despatch: Within 28 days
    •  
    • £12.99

Gunnera manicata (Large Plant)

Chilean Rhubarb

Gunnera is the 'big daddy' of the gardening world. The giant evergreen leaves can reach 1-2 metres across, and will add the wow factor to any garden, although isn't necessarily suitable for smaller gardens!

Also affectionately known as Giant Rhubarb, Gunnera is robust, spectacular and architectural. They make great specimen plants bog gardens and waterlogged spots, the reflection in water is especially beautiful. Gunnera manicata holds an RHS Award of Garden Merit too. Height: 2.5m (8') Spread: 4m (13').

 

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

    • Despatch: By end of March 2017
    •  
    • £9.99
    • 1 x 18 litre potted gunnera plant

    • Despatch:
    •  
    • £52.99
    • Out of stock
    • 1 x 5 litre potted gunnera plant

    • Despatch: Within 28 days
    •  
    • £23.99
    • 2 x 1 litre potted gunnera plants

    • Despatch: By end of March 2017
    •  
    • £16.99
    • 2 x 18 litre potted gunnera plants

    • Despatch:
    •  
    • £79.99
    • Out of stock
    • 2 x 5 litre potted gunnera plants

    • Despatch: Within 28 days
    •  
    • £35.99

Bergenia 'Pink Dragonfly' (Large Plant)

This cottage garden favourite is regaining popularity for its glossy evergreen foliage and bright-pink spring blooms. Bergenia 'Pink Dragonfly' flowers mostly in spring, but also produces extra flushes into midsummer. The narrow foliage of this variety remains green throughout the growing season before taking on tones of plum-red during the winter months. A superb perennial for the front of borders, and a useful addition to wildlife gardens where its nectar rich blooms will attract pollinating insects. 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: Within 28 days
    •  
    • £12.99
    • 2 x 2 litre potted bergenia plants

    • Despatch: Within 28 days
    •  
    • £19.99

Red Hot Poker 'Traffic Lights' (Large Plant)

Kniphofia uvaria

The playful colours of this dwarf red-hot poker are sure to stop you on your tracks! Unusual red, amber and green torch-like flower spikes are carried on sturdy stems above evergreen strappy foliage. This tough and reliable perennial is perfect for low maintenance borders and makes an impressive cut flower too! Height and Spread: 45cm (18").

 

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

    • Despatch: By end of November 2016
    •  
    • £9.99
    • 2 x 1 litre potted kniphofia plants

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

Red Hot Poker 'Lemon Popsicle' (Large Plant)

Kniphofia, Torch Lily

From the new 'Popsicle series', this lovely little perennial bears upright spikes of bright yellow flowers from June right through to October. Red Hot Poker 'Lemon Popsicle' is specially bred for a dwarf habit, attractive grassy foliage and high impact colour. This compact evergreen has a long flowering period making it a worthy choice for year round interest in even the smallest of gardens. Like all kniphofia, it is resilient, low maintenance and easy to grow. Height: 35cm (14"). Spread: 40cm (16").

 

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

    • Despatch: Within 28 days
    •  
    • £12.99
    • 2 x 2 litre potted kniphofia plants

    • Despatch: Within 28 days
    •  
    • £19.99

Viola 'Teardrops' (Pre-Planted Basket)

viola

For hassle-free gardening, look no further than our pre-planted baskets for easy seasonal colour. We're always on the look out for ways to make life simpler for our gardening customers. So what could be easier 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 colour. Then all you need to do is water them and wait!

Viola 'Teardrops' is one of our top performing hanging basket varieties, producing cascading trails of colourful blooms to brighten up the winter garden. Flowers just keep on coming and will continue to perform well into May – Four months of colour and all you need to do is hang the baskets in place and keep them watered. Height 15cm (6"). Spread: 20cm (8").,

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 pre-planted baskets
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    • 1 viola pre-planted basket with 6 plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Hellebore 'Washfield Doubles'

Helleborus x hybridus

 Customer Rating

Breathtaking, double-flowered hellebores from the 'Washfield' collection that are bred to perfection. Intriguing colours, patterns, flecks and ruffles are a sheer delight during the cold months of winter and early spring, while their leathery palmate foliage has an evergreen presence all year round. These delightful doubles come in a wide colour range including yellows, greens, blacks, reds, apricots and many other shades. Height and spread: 40cm (16").

More info
    • 5 x 7cm potted hellebore plants

    • Despatch: By end of December 2016
    •  
    • £13.99
    • 10 x 7cm potted hellebore plants

    • Despatch: By end of December 2016
    •  
    • £18.99