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 34 products.
 

Heuchera 'Patchwork' Mix

Coral Flower, Coral Bells

 Customer Rating
Sprays of delicate, tiny flowers float on wiry stems above neat mounds of vibrant foliage. Prized for their colourful leaves, these versatile semi-evergreen perennials make excellent drifts of ground cover, adding a distinctive splash of colour to the front of borders, or even brightening winter containers. Their airy blooms attract bees and are also useful as cut flowers. Height and spread: 40cm (16").
More info
    • 3 heuchera Postiplugs

    • Despatch: By end of March 2016
    • + FREE £5 voucher  
    • £8.99
    • 5 heuchera Postiplug plants

    • Despatch: By end of March 2016
    •  
    • £14.99
    • 6 heuchera Postiplugs

    • Despatch: By end of May 2016
    • + FREE £5 voucher  
    • £12.99
    • 10 heuchera Postiplug plants

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

Echinacea 'Cheyenne Spirit Mixed'

Coneflower

  • The first cone flower for bedding plants
This colourful coneflower has a super branching habit that produces many more flowers per plant than other varieties. Its free flowering habit makes Echinacea 'Cheyenne Spirit Mixed' ideal as an unusual bedding plant. This vibrant mix contains a range of sought after colours for a really dazzling display. Like all coneflowers, these Echinacea are also ideal for growing in wildlife gardens and coastal positions. The flowers are great for cutting too! Height: 50cm (20"). Spread: 40cm (16").
More info
    • 12 echinacea plug plants

    • Despatch: By end of April 2016
    •  
    • £11.99
    • 24 echinacea plug plants

    • Despatch: By end of April 2016
    • SAVE £5.99  
    • £23.98 £17.99
    • 48 echinacea plug plants

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

Geranium 'Rozanne'

Geranium 'Gerwat'

  • Winner of The RHS Chelsea Flower Show 'Plant of the Centenary'
  • Unique long-flowering period for a Hardy Geranium

A celebrated Cranesbill producing masses of saucer shaped, violet-blue blooms with dainty white centres. Being a sterile hybrid, Geranium 'Rozanne' flowers repeatedly throughout the summer and won’t self-seed like other Geraniums. This hardy perennial makes excellent ground cover through the front of informal borders or spilling from containers. As summer ends the loose mounds of foliage colour to reddish brown and fiery orange for an extended display into autumn. Height: 30cm (12"). Spread: 60cm (24").


Useful links:

Geranium 'Rozanne gets our vote for RHS 'Plant of the Centenary'

 

More info
    • 1 geranium jumbo plug plant

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

    • Despatch: By end of April 2016
    • SAVE £9.98  
    • £29.97 £19.99

Delphinium 'Rising Stars Mixed'

  • Best in class for delphiniums
We've given our customers the chance to get their hands on some very new, very different delphiniums from the world-famous 'New Zealand Hybrids' programme. There are far too many hybrids produced for our supplier to sell, so we've grouped our favourites into an exclusive 'Breeders Mixture', aptly named 'Rising Stars'! This exciting mix of delphinium flowers blends picotees, pastels, singles, doubles and frosted hybrids for a spectacular, towering display. You can even cut some blooms for a striking flower arrangement indoors. Height: 120cm (47"). Spread: 75cm (30").
More info
    • 4 delphinium Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £11.99
    • 8 delphinium Postiplug plants

    • Despatch: By end of April 2016
    • SAVE £5.99  
    • £23.98 £17.99

Red Hot Poker 'Fire Dance' (Large Plant)

Kniphofia, Torch Lily

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"). More info
    • 1 x 1 litre potted red hot poker plant

    • Despatch: By end of February 2016
    •  
    • £12.99
    • 2 x 1 litre potted red hot poker plants

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

Dicentra spectablis (Large Plant)

Lamprocapnos spectabilis, Bleeding Heart, Dutchman's Breeches, Lyre Flower

Charming rose-pink, heart shaped flowers dangle enticingly from elegant arching stems, giving this plant its common name of Bleeding Heart. This beautiful spring flowering perennial is one of the earliest to bloom each year, often continuing into early summer. The finely-cut foliage forms attractive clumps that increase year after year, at a slow but steady rate. This graceful hardy perennial enjoys a reliably moist soil, making it ideal for damp woodland areas as well as cottage garden borders. Dicentra spectabilis holds an RHS AGM for its superb garden performance and makes a worthy addition to any Spring garden. Height: 120cm (48"). Spread: 45cm (18"). More info
    • 1 x 3 litre potted dicentra plant

    • Despatch: By end of February 2016
    •  
    • £12.99
    • 2 x 3 litre potted dicentra plants

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

Eucalyptus gunnii (Large Plant)

Eucalyptus divaricata, Cider Gum, Ironbark

Prune this eye catching, hardy evergreen into an attractive shrub, or let it to grow into a magnificent tree. Young plants bear silvery blue foliage before producing more linear green leaves as the tree ages. Stems of eucalyptus leaves are excellent for adding to cut flower arrangements! The attractive flaking bark reveals exquisite shapes and patterns on the main trunk of mature specimens. Eucalyptus gunnii is fast growing and easy to care for, making an outstanding specimen plant. Height: Up to 25m (80ft) if not pruned. Spread: Up to 10m (32ft) if not pruned. More info
    • 1 x 3.5 litre potted eucalyptus plant

    • Despatch: By end of February 2016
    •  
    • £14.99
    • 2 x 3.5 litre potted eucalyptus plants

    • Despatch: By end of February 2016
    •  
    • £24.99

Vinca minor 'Atropurpurea'

Lesser Periwinkle

Deep plum-purple flowers appear in spring above the evergreen foliage of Vinca minor 'Atropurpurea'. This attractive Lesser Periwinkle is less vigorous than its larger cousin Vinca major, making it easier to confine to its allotted space. Vinca are perfect for filling tricky spots where little else grows. Ideal for creating weed suppressing ground cover in almost any position, from sunny banks to dark, shady corners. Height: 20cm (8") Spread: 50cm (19"). More info
    • 1 x 8cm potted vinca minor plant

    • Despatch: By end of February 2016
    •  
    • £9.99
    • 2 x 8cm potted vinca minor plants

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

Heuchera 'Berry Smoothie' (Large Plant)

Coral Flower, Coral Bells

Claret red veins pattern the pink foliage of Heuchera 'Berry Smoothie', which slowly ages to a deep burgundy by autumn. This new introduction is another eye-catching variety of this popular evergreen perennial. The creamy white flowers add extra interest in summer and prove particularly attractive to pollinating insects. A lovely choice for providing year round interest in patio containers and borders. Height: 45cm (18"). Spread: 50cm (20"). More info
    • 1 x 1 litre potted heuchera plant

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

    • Despatch: By end of May 2016
    •  
    • £17.99

Heuchera 'Marmalade' (Large Plant)

Coral Flower, Coral Bells

Who needs flowers when the foliage is this good? As the name suggests, Heuchera 'Marmalade' provides mounds of crimped, bronze-pink foliage that matures to a delicious burnt orange colour. The creamy-brown flowers, although relatively insignificant, are adored by pollinating insects. This compact evergreen perennial is ideal for creating colourful ground cover, edging paths or providing year round colour in patio containers. Height: 30cm (12"). Spread: 45cm (18"). More info
    • 1 x 1 litre potted heuchera plant

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

    • Despatch: By end of May 2016
    •  
    • £17.99

Heucherella 'Redstone Falls' (Large Plant)

With parentage of Heuchera and Tiarella, this superb perennial has vigorous trailing stems cloaked with evergreen foliage. The copper-pink spring foliage matures to a fabulous tapestry of red, orange and gold tones by autumn. Loose panicles of creamy white flowers add extra interest in summer. X Heucherella 'Redstone Falls' is an unusual perennial that is sadly underused in gardens. Plant it in containers, hanging baskets and window boxes allowing the spreading stems to spill over in a colourful year round display. In borders it will create dense ground cover if planted en masse. Height: 25cm (10"). Spread: 35cm (14"). More info
    • 1 x 1 litre potted heucherella plant

    • Despatch: By end of February 2016
    •  
    • £9.99
    • 2 x 1 litre potted heucherella plants

    • Despatch: By end of February 2016
    •  
    • £17.99

Red Hot Poker 'Papaya Popsicle' (Large Plant)

Kniphofia, Torch Lily

Part of the 'Popsicle Series', this exotic looking Kniphofia produces its orange and yellow flower spikes over a particularly long period. From June to October the prolific blooms rise above clumps of evergreen grassy foliage. Red Hot Poker 'Papaya Popsicle' is a compact dwarf variety that will easily fit into the smallest borders. Kniphofia are reliable perennials with a tough disposition and good drought resistance. Height: 35cm (14"). Spread: 40cm (16"). More info
    • 1 x 3 litre potted kniphofia plant

    • Despatch: By end of February 2016
    •  
    • £12.99
    • 2 x 3 litre potted kniphofia plants

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