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 15 products.
 

Gaillardia 'Snappy'

Blanket Flower

  • New in 2015
  • Finally, a gaillardia that lasts for years in the garden
Finally, a long-lasting gaillardia for years of pleasure in the garden. Blanket Flowers have a reputation for being unreliably perennial but new Gaillardia ‘Snappy’ makes that a thing of the past. We can now offer you unrivalled flower power alongside true perennial reliability for years of vibrant border and container colour. This world-class introduction offers non-stop flowering on sturdy, compact, upright plants from mid-summer through to late autumn. The red and yellow blooms also take on a purple sheen in the summer sunshine and will be much loved by bees, butterflies and other pollinators. Height and spread: 30cm (12").
More info
    • 5 gaillardia Postiplug plants

    • Despatch: By end of September 2015
    • SAVE £3  
    • £9.99 £6.99
    • 10 gaillardia Postiplug plants

    • Despatch: By end of September 2015
    • SAVE £3  
    • £14.99 £11.99

Oxalis 'Sunny' (Large Plant)

Shamrock, Sorrel

The Burgundy Shamrock is versatile, and can be used in summer patio pots, bedding, borders, rockeries, or beneath trees and shrubs. Oxalis 'Sunny' is particuarly handsome, with leaves carrying in burgundy and ruby colourings.

The rich foliage is accompanied by tubular pink flowers from spring to summer. In very mild areas, Oxalis can be grown in sheltered borders or patio pots. The spring foliage looks especially pretty against spring bulbs. Height: 20cm (8"). Spread: 30cm (12").

More info
    • 1 x 2 litre potted oxalis plant

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

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

Iris ensata 'Collection'

Japanese Iris, Iris kaempferi

Spectacular, exotic blooms are carried above narrow, strap-like foliage in summer. Iris ensata enjoy a reliably moist soil and positively thrive in bog gardens or at the margins of a pond or stream. The long stems of these low maintenance perennials also make them ideal for cutting for an eye-catching vase indoors. Height: 90cm (36"). Spread: 30cm (12"). More info
    • 4 bare root Iris plants

    • Despatch: By end of September 2015
    •  
    • £13.99
    • 8 bare root Iris plants

    • Despatch: By end of September 2015
    • SAVE £8.99  
    • £27.98 £18.99

Sedum 'Matrona' (Large Plant)

Sedum telephium, Stonecrop

Sedum will attract butterflies to the garden in their droves. Sedum plants are long-lasting, hardy and drought tolerant. Sedum 'Matrona' forms a clump of foliage, with a unique bronze tinge, contrasting beautifully with its pink autumn blooms. Sedum will thrive in hot, sunny borders, and are ideal for beginners. Their autumn flowering period is welcomed, bringing new colour to the garden as summer bedding displays fade away! Height: 75cm (30"). Spread: 30cm (12"). More info
    • 1 x 1 litre potted sedum plant

    • Despatch: By end of September 2015
    •  
    • £7.99
    • 2 x 1 litre potted sedum plants

    • Despatch: By end of September 2015
    •  
    • £12.99

Poppy 'Gartenzwerg' (Large Plant)

Papaver nudicaule, Arctic Poppy, Icelandic Poppy

Icelandic Poppies are absolutely glorious! The flowers of Poppy 'Gartenzwerg' are silky and glisten in the sun, in lovely shades of coral pink and red. The late spring flowers of this pretty biennial are some of the first for the mixed border, and will certainly attract comment from the neighbours!Icelandic Poppies are ideal for cutting, thanks to the upright blooms and durable stems. When cutting the blooms for indoors, sear the bottom of the stems over a naked flame to seal them. Height and spread: 30cm (12"). More info
    • 1 x 1 litre potted poppy plant

    • Despatch: By end of October 2015
    •  
    • £9.99
    • 2 x 1 litre potted poppy plants

    • Despatch: By end of October 2015
    •  
    • £16.99

Sedum 'Matrona' (Large Plant)

Sedum telephium, Stonecrop

Sedum will attract butterflies to the garden in their droves. Sedum plants are long-lasting, hardy and drought tolerant. Sedum ‘Matrona' forms a clump of foliage, with a unique bronze tinge, contrasting beautifully with its pink autumn blooms.

Sedum will thrive in hot, sunny borders, and are ideal for beginners. Their autumn flowering period is welcomed, bringing new colour to the garden as summer bedding dipslays fade away! Height: 75cm (30"). Spread: 30cm (12").

More info
    • 1 x 3.5 litre potted sedum plant

    • Despatch: By end of September 2015
    •  
    • £10.99
    • 2 x 3.5 litre potted sedum plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Lobelia cardinalis 'Queen Victoria' (Large Plant)

Cardinal Flower, Lobelia fulgens, Lobelia splendens

Tall spikes of deep maroon foliage topped by glowing scarlet blooms bring a welcome splash of late summer colour, when many flowers have already faded. This exotic looking, short lived perennial is ideal for filling gaps in damp borders, and looks spectacular planted beside ponds and streams. Height: 90cm (36"). Spread: 30cm (12"). More info
    • 1 x 1 litre potted lobelia plant

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 1 x 3 litre potted lobelia plant

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 2 x 1 litre potted lobelia plants

    • Despatch: By end of April 2016
    •  
    • £14.99
    • 2 x 3 litre potted lobelia plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Sanguinaria canadensis f.multiplex

Bloodroot, Red Puccoon

Although rarely seen in the garden centres, Sanguinaria canadensis f.multiplex is a beautiful plant for a damp shady spot in the garden. Small white blooms that resemble tiny waterlilies emerge from between the blue-green leaves in spring. The elegant flowers are delicately scented with a light, spicy fragrance. Interestingly the rhizomes of this hardy perennial exude red sap when cut, giving the plant it's common name of Bloodroot. Perfect for woodland gardens, shaded borders and rockeries. Height: 15cm (6"). Spread: 30cm (12"). More info
    • 1 bare root sanguinaria plant

    • Despatch: By end of March 2016
    •  
    • £19.99
    • 2 bare root sanguinaria plants

    • Despatch: By end of March 2016
    • SAVE £9.99  
    • £39.98 £29.99

Aquilegia chrysantha 'Yellow Star' (Large Plant)

Columbine, Granny's Bonnet

Aquilegia chrysantha 'Yellow Star’ stands out from other cultivars for its yellow flowers - a colour that is quite unusual among Aquilegias. This captivating Columbine blooms with long spurs that perch upon tall, slender stems from May to July, and make delightful cut flowers. This charming cottage garden perennial is undemanding and easy to grow. A lovely addition to borders, woodland areas and wildlife gardens, where it will attract plenty of pollinating insects. Height: 75cm (30"). Spread: 30cm (12"). More info
    • 1 x 1 litre potted aquilegia plant

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 2 x 1 litre potted aquilegia plants

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

Aquilegia vulgaris 'William Guinness' (Large Plant)

Columbine, Granny's Bonnet, Aquilegia 'Magpie'

The striking black bonnets of Aquilegia ‘William Guiness’ make a superb contrast with the white corolla. The exquisite blooms of this classic cottage garden perennial are carried on wiry stems, set above pretty ferny foliage. This hardy Columbine is perfect for en masse in borders and shady woodland edges, and makes an attractive cut flower for a vase indoors. Height: 75cm (30”). Spread: 30cm (12”). More info
    • 1 x 1 litre potted aquilegia plant

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 2 x 1 litre potted aquilegia plants

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

Foxglove lanata (Large Plant)

Digitalis, Grecian Foxglove

An unusual and choice addition to your borders. The Grecian Foxglove is understated, reserved and rarely seen in UK gardens. Foxglove lantana produces fawn coloured flowers, heavily patterned with intricate, dark brown veins. The stems and foliage are covered with fine, downy hairs giving it another common name of Woolly Foxglove. This hardy perennial is compact, reaching just 60cm (24") tall - perfect for the front of shaded borders and woodland gardens where it can be appreciated close at hand. The flower spikes also make a refreshingly unpretentious cut flower. Height: 60cm (24"). Spread: 30cm (12"). More info
    • 1 x 1 litre potted digitalis plant

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 2 x 1 litre potted digitalis plants

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

Foxglove 'Milk Chocolate' (Large Plant)

Digitalis parviflora

Rich chocolate coloured flowers tightly fill the slender flower spikes of this superb Foxglove. Digitalis parviflora ‘Milk Chocolate’ is a rarely seen variety with glossy foliage that complements the unusual blooms. Native to Spain, this Foxglove is surprising hardy and enjoys a lightly shaded position in the garden. The nectar rich blooms prove particularly attractive to bees, making this a useful addition to wildlife areas. Pair it with white flowered Digitalis for a particularly elegant contrast. Height: 60cm (24"). Spread: 30cm (12"). More info
    • 1 x 1 litre potted digitalis plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted digitalis plants

    • Despatch: By end of September 2015
    •  
    • £14.99