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 28 products.
 

Dianthus barbatus 'Sweet'

Sweet William

  • Summer-flowering Sweet Williams!

Enjoy these delightfully fragrant Sweet Williams all summer long! Clusters of sweetly scented flowers in shades of red, white and purple are borne atop stiff upright stems from June through to September. Superb for cutting for a vase indoors, the vibrant flowers of Dianthus barbatus 'Sweet' are also attractive to bees. Often grown as a biennial, this short lived perennial is ideal for cottage garden beds and borders. Height: 45cm (18"). Spread: 30cm (12").


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 6 dianthus plug plants

    • Despatch: By end of April 2016
    •  
    • £5.99
    • 24 dianthus plug plants

    • Despatch: By end of April 2016
    •  
    • £14.99
    • 48 dianthus plug plants

    • Despatch: By end of April 2016
    • SAVE £9.99  
    • £29.98 £19.99

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"). 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

Gaura lindheimeri 'Sparkle White'

This stunning hardy perennial makes a fabulous border plant! Its graceful, slender stems are topped with a flurry of dazzling white, starry blooms that still look fresh and airy at the end of summer. This bushy, clump forming variety has a neat, compact habit that makes it perfect for the front of sunny borders or edging paths as a mini hedge. Once established, Gaura lindheimeri 'Sparkle White' even copes well during periods of drought. Height and spread: 45cm (18").
More info
    • 24 gaura plug plants

    • Despatch: By end of April 2016
    •  
    • £13.99
    • 48 gaura plug plants

    • Despatch: By end of April 2016
    • SAVE £7.99  
    • £27.99 £19.99

Scabious 'Blue Jeans'

Scabiosa atropurpurea, Pincushion Flower

 Customer Rating
An abundance of blue pincushion scabious flowers will attract bees and butterflies throughout summer. The tall, wiry stems can also be cut to create a pretty display indoors. Scabiosa 'Blue Jeans' blends well among cottage garden borders, where they look particularly effective planted in large drifts. Height and spread: 45cm (18").
More info
    • 6 scabious plug plants

    • Despatch: By end of April 2016
    •  
    • £5.99

Coreopsis grandiflora 'Presto'

Tickseed

 Customer Rating
Coreopsis 'Presto' is so long-flowering and colourful that you can mix it up with summer bedding annuals to achieve a truly amazing, long lasting display. Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long. This versatile tickseed plant will grow almost anywhere, even in dry soil! Height and spread: 45cm (18").
More info
    • 6 coreopsis plug plants

    • Despatch: By end of April 2016
    •  
    • £5.99
    • 72 coreopsis plug plants

    • Despatch: By end of April 2016
    • Double up 36 to 72 for £5 extra  
    • £21.98 £15.99

Cosmos atrosanguineus 'Eclipse'

Bidens atrosanguinea, Chocolate Plant

We've topped our chocolate cosmos offering with the richest scent and colour. Cosmos 'Eclipse' surpasses all previous introductions with a scent that is utterly divine, emanating from deeply rich maroon flowers that are so dark and sensual they appear almost black – certainly the darkest cosmos you'll find on the market. Cosmos 'Eclipse' is the must-have garden plant for all chocaholics out there, the rich scent will fill the garden on a calm sunny day - you'll think someone has unwrapped your favourite chocolate bar! These sturdy cosmos plants add luxury and scent to summer containers and seasonal bedding displays. If you are looking to get 'beach fit' for you summer holiday this year, Cosmos 'Eclipse' might not be for you - you'll be heading for the snack cupboard every time you walk past your plants! Height: 45cm (18"). Spread 30cm (12"). More info
    • 4 cosmos Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 8 cosmos Postiplug plants

    • Despatch: By end of April 2016
    • SAVE £1.99  
    • £19.98 £17.99

Salvia nemorosa 'Marcus' (Large Plant)

Salvia are effortless, hardy plants for mixed borders. Salvia nemorosa 'Marcus' is a particularly special selection, with deep indigo flower spikes above clumps of aromatic foliage, the blooms coming in such density that they create a solid block of colour.

Salvia plants are deer resistant, rabbit resistant, and will attract bees and butterflies to your garden. Salvia 'Marcus' is short, neat and will make a strong feature towards the front of cottage garden borders and wildlife gardens. Trimming the plants in midsummer will encourage even more flowers! Height: 45cm (18"). Spread: 45cm (18").

More info
    • 1 x 1 litre potted salvia plant

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

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

Scabious 'Kudos'

Scabiosa, Pincushion Flower

  • A cottage garden favourite, now available for the patio
  • You don't need borders to grow this perennial favourite
  • So many blooms we lost track!
We like to tell our customers how many blooms to expect from our plants, but when it came to counting the flowers on Scabious 'Kudos' we just couldn’t keep up! Expect a long season of colour from these hardy herbaceous perennial plants. These compact plants will be smothered in delicate pale pink blooms from June through to October. Leave the last flush of flowers to turn in to attractive seedheads for winter interest. Shorter than many scabious varieties, this cottage garden classic performs perfectly in patio containers and is ideal for attracting butterflies, bees and other pollinators to the garden. If setting Scabious 'Kudos' out in the border, make sure to give it the spot it deserves at the front of your display and enjoy it for months at a time, for years to come. Height: 45cm (18"). Spread: 30cm(12").
More info
    • 5 scabious Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 10 scabious Postiplug plants

    • Despatch: By end of April 2016
    • SAVE £4.99  
    • £19.98 £14.99

Penstemon 'Summer Bluebell'

  • Exclusive new 'Summer Bluebell'
Bluebells are no longer reserved for the spring season! Our latest hardy penstemon will bloom each summer, producing flower spikes that bear striking similarity to the common Bluebell. As your true bluebells fade, Penstemon 'Summer Bluebell' will take over, producing elegant blooms from early June through to September. The satin, bell-shaped flowers are carried over semi-evergreen foliage and make a fantastic alternative to Antirrhinums (snapdragons) in annual bedding schemes. These compact penstemon plants boast large flowers and superb weather resistance. Easy to maintain, these hardy perennials are also attractive to bees and other pollinators. Height and spread: 45cm (18")
More info
    • 12 penstemon plug plants

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 24 penstemon plug plants

    • Despatch: By end of April 2016
    • SAVE £4.99  
    • £19.98 £14.99

Fuchsia 'Dollar Princess' (Hardy)

Fuchsia 'Dollar Prinzessin'

This bushy variety bears a profusion of double purple blooms with contrasting cerise pink sepals over a particularly long period. The ruffled blooms of Fuchsia 'Dollar Princess' appear early in the season on vigorous, upright stems. This popular hardy fuchsia is well loved for its showy blooms and holds an RHS AGM for its excellent garden performance. A lovely compact specimen for a patio container or planted at the front of mixed borders. Height and spread: 45cm (18").


Useful links:

How to grow fuchsias


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 3 fuchsia Postiplug plants

    • Despatch: By end of April 2016
    •  
    • £6.99

Sedum telephium 'Purple Emperor' (Large Plant)

Stonecrop

A particularly stylish Sedum with succulent burgundy-black foliage that adds a touch of drama to the front of borders. In late summer, Sedum telephium 'Purple Emperor' produces wide panicles of ruby-red flowers that persist well into autumn. The striking blooms are loved by butterflies and provide a useful source of late season nectar for pollinating insects. This superb hardy perennial holds an RHS AGM for its garden performance. An excellent choice for hot, sunny borders and exotic planting schemes. Height and spread: 45cm (18"). More info
    • 1 x 2 litre potted sedum plant

    • Despatch: By end of February 2016
    •  
    • £11.99
    • 2 x 2 litre potted sedum plants

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

Geum 'Fireball' (Large Plant)

Avens

Ruffled, semi double flowers with gently scalloped edges make an eye catching display from May to July. Geum 'Fireball' is longer flowering than older cultivars and equally well loved by pollinating insects. This compact little Avens forms a neat clump of foliage that sits nicely at the front of borders. An easy to grow and undemanding hardy perennial, that also makes a nice cut flower. Height and spread: 45cm (18"). More info
    • 1 x 2 litre potted geum plant

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

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