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.
 

SunDiascia 'Eternal Flames'

Twinspur

 Customer Rating
  • T&M exclusive
  • Brand new hardy diascia
This lovely South African plant produces slender spires, packed with pretty tubular blooms, over a remarkably long flowering period. Diascia 'Eternal Flames' will fill borders, beds and containers with vibrant shades of orange and pink from June to October. Although Twinspur is generally grown as an annual, it is actually perennial and hardy to -8C (18F), so it can be easily overwintered with some protection from winter weather. Height and spread: 30cm (12").
More info
    • 3 sundiascia Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 9 sundiascia Postiplug plants

    • Despatch: By end of April 2016
    • SAVE £14.98  
    • £29.97 £14.99

Phlox paniculata 'Peppermint Twist' (Large Plant)

Perennial Phlox

Delightfully dwarf, this perennial Phlox reaches just 45cm (18") tall! Charming pink and white pinwheel blooms will fill the air with the most exquisite fragrance. With its neat, bushy habit, Phlox paniculata 'Peppermint Twist' is perfect for patio containers - plant it next to a doorway where you can really appreciate their fragrance. Highly attractive to pollinating insects, this pretty variety will brighten up the front of borders, and also makes a pleasing cut flower. Height and spread: 45cm (18").

 

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

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

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

Anemone hybrida 'Queen Charlotte'

Japanese Anemone, Anemone x hybrida 'Konigin Charlotte'

It's easy to overlook the late show in your garden, as you scramble to fill it with summer colour. But, these superb Japanese anemones will take the blooming relay torch from summer bedding and carry it well into the autumn. Anemone 'Queen Charlotte' is the pick of the bunch, with an extra layer of pure pink petals. Height: 90cm (35"). Spread: 60cm (24").

More info
    • 1 anemone jumbo plug plant

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 3 anemone jumbo plug plants

    • Despatch: By end of June 2016
    • SAVE £9.98  
    • £29.96 £19.99

Astrantia major 'Roma' (Large Plant)

Hattie's Pincushion, Masterwort

Pretty pincushion flowers in a delicate shade of pink, rise above loose clumps of attractive glossy foliage. Often seen in cottage garden borders, Astrantia major 'Roma' also thrives in the moist soil at a woodland edge or beside a pond or stream. The understated blooms, surrounded by papery outer bracts, are ideal for cutting for a delicate fresh or dried flower arrangement. Astrantia ‘Roma’ is one of the best varieties, and comes with an RHS AGM. The flowers persist from June to September and won't self seed as this variety is completely sterile. For almost instant gardening, choose Masterwort. Plants are quick-growing, easy to establish and long-lasting. Height: 90cm (35") and Spread: 45cm (18").

 

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

    • Despatch: By end of February 2016
    •  
    • £14.99
    • 2 x 1 litre potted astrantia plants

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

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").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
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

Astilbe x arendsii 'Look at Me'

False Goatsbeard

Turn any dark, damp corner of the garden into a focal point with this stunning Astilbe. The bubble-gum pink flower plumes and vivid ruby-red stems of Astilbe 'Look At me' virtually shout for your attention. This easy-grow perennial will thrive in soil too wet for many garden plants, but you don't have to tuck it out of site. This star perennial is also a top performer in patio pots when kept shaded and well watered. Voted Best New Plant when launched to the industry at the 2013 European Plantarium trade fair - we now have stock to meet consumer demand for this sought after perennial plant. Height: 45cm (18"). Spread: 50cm (20"). More info
    • 3 bare root astilbe plants

    • Despatch: By end of March 2016
    •  
    • £8.99
    • 6 bare root astilbe plants

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

Primrose 'Palazzo Collection'

Primula

  • The all new pom-pom primrose
Our lastest primrose introduction are already causing a big stir. To make ordering both 'Palazzo Wine' and 'Palazzo Pink' easier and more economical, we're now offering them as a duo collection. Treat yourself to some winter luxury. Both velvety shades are topped off with a rich silver-laced edge and sumptuous ruffled petals, making the perfect centrepiece plant for winter and spring containers, baskets and bedding displays. Height: 25cm (10in). Spread: 20cm (8in).
More info
    • 6 primrose jumbo plug plants - 3 of each colour

    • Despatch: By end of September 2016
    • SAVE £4.99  
    • £17.98 £12.99

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").

 

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

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

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

Hellebore 'Single Pink Spotted' (Large Plant)

Helleborus

Hellebores are essential for winter colour in the garden, and are just as important in the garden as snowdrops, aconites and early spring bulbs. The Christmas Rose blooms extremely early in the year, sometimes even from Christmas, hence the name. Hellebores are most at home in shady borders, or for planting beneath trees and shrubs.

Hellebores have clear-coloured, long-lasting, cup-shaped flowers. Hellebore ‘Single Pink Spotted’ offers blooms with distinctive spots on each petal. The evergreen Hellebore is excellent for winter colour in the garden; plants are clump-forming are brilliant for ground cover. Height and spread: 45cm (18").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 3 litre potted hellebore plant

    • Despatch:
    •  
    • £11.99
    • Out of stock
    • 2 x 3 litre potted hellebore plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

Anemone hybrida 'Queen Charlotte' (Large Plant)

Japanese Anemone, Anemone x hybrida 'Konigin Charlotte'

It's easy to overlook the late show in your garden, as you scramble to fill it with summer colour. But, these superb Japanese anemones will take the blooming relay torch from summer bedding and carry it well into the autumn. Anemone 'Queen Charlotte' is the pick of the bunch, with an extra layer of pure pink petals. Height: 90cm (35"). Spread: 60cm (24").

 

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

    • Despatch: By end of April 2016
    •  
    • £12.99
    • 2 x 2 litre potted anemone plants

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

Melittis 'Royal Velvet Distinction' (Large Plant)

Bastard Balm

Melittis 'Royal Velvet Distinction' is an easy to grow, hardy plant for those damp shady corners of the garden. The aromatic foliage is honey-scented and, along with the orchid-like pink and white flowers, attracts bees and butterflies to the garden. Melittis is very easy to establish, and makes robust ground cover for woodland gardens and shaded borders. Height: 70cm (28"). Spread: 50cm (20").

 

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

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

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

Primrose 'Palazzo Pink'

Primula

  • The all new pom-pom primrose
Treat yourself to some luxury at every day prices with our latest fancy primrose. We've selected 'Palazzo Pink' F1 for its sumptuous crested blooms and sheer flower power. The pink ruffled blooms are complimented by an elegant silver-laced edging and are produced in profusion, creating what we are calling a one plant posie. These hardy vigorous plants make perfect colourful border fillers, adding real impact to spring displays, but 'Palazzo Pink' really comes into its own in patio containers, where you can really appreciate the opulent blooms From February right through to May. Why not set a single plant in a small pot for occasional use as a table centre piece? Height: 25cm (0in) Spread: 20cm (8in).
More info
    • 3 primrose jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £8.99
    • 6 primrose jumbo plug plants

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