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 16 products.
 

Phlox Collection (Creeping)

Phlox subulata

 Customer Rating
  • Fragrant ground cover
Groundcover needn’t be dull! Carpet your garden in rich colour and keep the weeds at bay with our perennial creeping phlox collection. This hardy rockery plant has many uses – underplant trees, shrubs and tall perennials, soften path edging or cover awkward slopes and banks. If you’re tired of your lawn, why not replace it with a sea of seasonal colour. This collection comes into its own in March to May, bridging the colour gap between winter and summer bedding. Height: 15cm (6"). Spread: 50cm (20")..
  • Collection comprises:
  • Phlox subulata 'Candy Stripes'
  • Phlox subulata 'Snowflake'
  • Phlox subulata 'Red Wings'
  • Phlox subulata 'Drummonds Pink'
  • Phlox subulata 'Emerald Cushion'
More info
    • 5 phlox Postiplug plants

    • Despatch: By end of June 2016
    •  
    • £13.99
    • 10 phlox Postiplug plants

    • Despatch: By end of June 2016
    • SAVE £7.99  
    • £27.98 £19.99
    • 20 phlox Postiplug plants

    • Despatch: By end of July 2016
    • SAVE £30.97  
    • £55.96 £24.99
    • 50 phlox Postiplug plants

    • Despatch: By end of July 2016
    • SAVE £99.91  
    • £139.90 £39.99

Phlox 'Bavaria'

Creeping Phlox are useful for dry, sunny spots and parched ground where other plants just won't grow! Once established, Phlox 'Bavaria' will thrive in the driest of soils, producing an impenetrable mat of fragrant flowers, suppressing weeds and resisting drought! The detailed eye on each gleaming white flower sets this stunning, evergreen drought tolerant perennial apart from the crowd. Height: 15cm (6"). Spread: 50cm (20"). More info
    • 5 phlox jumbo plug plants

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 10 phlox jumbo plug plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Euphorbia polychroma 'Bonfire' (Large Plant)

Euphorbia epithymoides, Milkweed, Spurge

An effervescent little Euphorbia for the garden border. The short, compact plants has amazing evergreen foliage, which turns green and burgundy in the summer, then deeps to bright red by autumn.The spring flowers are sulphur yellow, and create a striking contrast.

Euphorbia are easy to grow in most sites and soils, and the plants of Euphorbia ‘Fireglow’ appear to glow! Excellent for the front of the border, rockeries or pots. Height: 25cm (10"). Spread 45cm (18").

 

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

    • Despatch: By end of May 2016
    •  
    • £10.99
    • 2 x 2 litre potted euphorbia plants

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

Phlox douglasii 'Red Admiral' (Large Plant)

Moss Phlox

Phlox ‘Red Admiral’ is perfect for rockeries, the front of border or patio containers, and looks fantastic alongside spring bulbs. Also known as the Moss Phlox, this hardy perennial creates a low cushion of weed-suppressing foliage and, in spring, luminous displays of red flowers. Plants are vigorous, disease resistant, and stay compact, yet full of bloom! Phlox ‘Red Admiral’ also holds an RHS Award of Garden Merit. Height: 15cm (6"). Spread: 30cm (12").

 

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

    • Despatch: By end of May 2016
    •  
    • £9.99
    • 2 x 1 litre potted phlox plants

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

Phlox douglasii 'White Admiral' (Large Plant)

Moss Phlox

Phlox douglasii ‘White Admiral’ is a fantastic, carpeting plants, which creates a low cushion of weed-suppressing foliage. During the spring, this is smothered in white flowers.

Moss Phlox plants are vigorous, pest and disease free, and perfect for rockeries, the front of border or patio containers. Plant up some spring patio pots with Moss Phlox, mixed with spring bulbs. Height: 15cm (6"). Spread: 30cm (12").

 

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

    • Despatch: By end of May 2016
    •  
    • £9.99
    • 2 x 1 litre potted phlox plants

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

Euphorbia characias 'Black Pearl' (Large Plant)

Milkweed, Spurge

A unique plant which gives all year round interest! Euphorbia are fully hardy, and will tolerate dry, sunny borders and periods of drought. Plants are evergreen and architectural, and possibly offer the longest flowering period of any garden plant. The unique black and green flowers of Euphorbia characias ‘Black Pearl’ are full of sweet nectar, and open in spring, and stay in place until the first frosts. Euphorbia will thrive in dry gardens, Mediterranean-style plantings and large patio pots. Height and Spread: 60cm (24").

 

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

    • Despatch: By end of September 2016
    •  
    • £7.99
    • 2 x 1 litre potted euphorbia plants

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

Bergenia 'Dragonfly Angel Kiss' (Large Plant)

Elephant's Ears

A lovely cultivar of a cottage garden favourite! Bergenia 'Dragonfly Angel Kiss' forms neat clumps of glossy evergreen foliage that turns a deep shade of claret during the winter months. In spring, this provides the perfect backdrop for its beautiful white flowers that age to palest pink. Commonly known as Elephant Ears, this hardy perennial is extremely easy to grow in almost any site or soil, and needs very little maintenance. Perfect for creating eye catching ground cover. 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

Bergenia 'Dragonfly Sakura' (Large Plant)

Elephant's Ears

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 May 2016
    •  
    • £12.99
    • 2 x 2 litre potted bergenia plants

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

Bergenia 'Pink Dragonfly' (Large Plant)

Elephant's Ears

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

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

Lamium maculatum 'Pink Pewter' (Large Plant)

Dead Nettle

Lamium maculatum 'Pink Pewter' is a tough and resilient hardy perennial, thriving in shade on almost any soil. This vigorous dead nettle will form a carpet of sparkling silver foliage with deep green margins. From April through to midsummer the clusters of salmon pink flowers provide a rich supply of nectar for pollinating insects. A first-class ground cover plant for a shaded spot - perfect for creeping through woodlands, wildlife gardens, rockeries or borders. Height: 10cm (8"). Spread: 60cm (24").

 

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

    • Despatch: By end of May 2016
    •  
    • £7.99
    • 2 x 1 litre potted lamium plants

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

Soldanella montana

Snowbell, Mountain Tassel

Nodding spring blooms, with fringed pale blue petals are carried on upright stems like little parasols. The unusual flowers of Soldanella montana rise above clumps of rounded, leathery green foliage that remains evergreen. Commonly known as the Snowbell, this delightful and rarely seen hardy perennial makes a unique feature in the rockery or planted in alpine troughs.Height and spread: 20cm (8"). More info
    • 1 x 9cm potted soldanella montana plant

    • Despatch:
    •  
    • £14.99
    • Out of stock
    • 2 x 9cm potted soldanella montana plants

    • Despatch:
    • SAVE £9.99  
    • £29.98 £19.99
    • Out of stock

Euphorbia x martini 'Ascot Rainbow' (Large Plant)

Milkweed, Spurge

Evergreen blue-grey leaves edged with bright gold margins make a colourful display throughout the year. The vibrant foliage of Euphorbia x martinii 'Ascot Rainbow' takes on an attractive rosy pink tinge during colder weather and shows superb winter hardiness. In spring, this showy Spurge bears chartreuse green flowers towards the tip of each stem, each with a dark contrasting eye. This striking perennial makes a lovely addition to sunny borders, and once established, is particularly drought tolerant. Height and spread: 50cm (20").

 

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

    • Despatch: By end of May 2016
    •  
    • £13.99
    • 2 x 2 litre potted euphorbia plants

    • Despatch: By end of May 2016
    •  
    • £21.99