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.


For beautiful summer flowers browse our range of annual plants.



We have found 15 products.
 

Alstroemeria 'Everest Blue Diamond'

Peruvian Lily

 Customer Rating
  • T&M Exclusive

A fabulous, Peruvian Lily producing mauve blue flowers on tall, upright stems. Alstroemeria 'Everest Blue Diamond' makes an eyecatching feature in borders or containers throughout the summer. Support this hardy perennial with our handy climbing frame for the most impressive display. With so many long-stemmed blooms, you will never be short of cut flowers to add to magnificent bouquets. Height: 140cm (55"). Spread: 75cm (30").

More info
    • 3 alstroemeria jumbo plug plants

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

Delphinium 'Pink Blushes'

This Pink Blush is anything but embarrassing! Glorious, tall spikes of evenly spaced, perfectly formed florets in shades of pink, from pastel to magenta! The result of many years of breeding from Terry Dowdeswell, our world-class Delphinium expert in New Zealand, Delphinium 'Pink Blushes' are strong plants with disease resistance and unrivalled garden performance. Height: 1.5m (5'). Spread: 75cm (30").
More info
    • 5 delphinium Postiplug plants

    • Despatch: By end of June 2016
    •  
    • £12.99
    • 10 delphinium Postiplug plants

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

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: By end of July 2016
    •  
    • £11.99
    • 2 x 3 litre potted hellebore plants

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

Viola 'Bunny Ears'

Viola x wittrockiana

  • Add bounce to your baskets!
  • The Viola everyone wants to grow!
  • Unusual flowers add real character

Cheeky little Violas that retain that classic pansy face beneath unusually long ‘rabbit ear’ top petals. The compact plants are perfect for smaller containers or planting pockets in rockeries and borders - you can even set them in cracks in walls and paving. Despite their size these tidy viola plants pack a real floral punch, creating cushions of mounded colour. Height and spread: 20cm (8").
More info
    • 36 viola plug plants

    • Despatch: By end of September 2016
    •  
    • £13.99
    • 72 viola plug plants

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

Veronica longifolia 'Candied Candle' (Large Plant)

Speedwell

Veronica 'Candied Candle' bears detailed flower spikes in candy pink. Plants are strong, weatherproof and untroubled by pest and disease. This late-flowering perennial will establish easily into any border, and flower it's heart out from late summer, attracting hosts of butterflies and beneficial insects. Veronica plants are very low-maintenance, super hardy and flower for a long period. Height: 50cm (20"). Spread: 30cm (12").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 1 x 2 litre potted veronica plant

    • Despatch: By end of July 2016
    •  
    • £12.99
    • 2 x 1 litre potted Veronica plants

    • Despatch: By end of June 2016
    •  
    • £16.99
    • 2 x 2 litre potted veronica plants

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

Mazus reptans

  • Try a new ground cover idea
This low growing, matt-forming perennial is perfect for filling gaps between stepping stones or at the front of sheltered borders and rockeries. The spreading foliage of Mazus reptans forms a dense carpet that is covered in pretty lilac-blue flowers with a yellow-spotted lower lip. This hardy, ground cover alpine has a long flowering period from late spring to July. Height: 5cm (2"). Spread: 30cm (12").
More info
    • 5 mazus jumbo plug plants

    • Despatch: By end of June 2016
    •  
    • £14.99
    • 10 mazus jumbo plug plants

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

Hellebore 'Pink Spotted'

  • The very best hellebores that money can buy

Exquisite cup shaped, pink flecked blooms appear like jewels in dull winter borders. Hellebore 'Pink Spotted' is the essential low maintenance plant for any difficult, shady border where they will form clumps of leathery evergreen foliage for a year round garden presence. These resilient hardy perennials are vigorous and long lived, lasting for 20 years or more. Height and spread: 45cm (18").



Thompson & Morgan inherited the highly-commended hellebore breeding programme of Elizabeth Strangman when she retired and we are immensely proud to carry on her legacy, perfecting the amazing colours and forms of this wonderful perennial.
More info
    • 1 x 7cm potted hellebore plant

    • Despatch: By end of June 2016
    •  
    • £13.99

Foxglove 'Camelot Lavender' (Large Plant)

Digitalis purpurea

Foxgloves are the perfect cottage garden plant; and new strain Foxglove 'Camelot Lavender' has the traditional appearance of usual wild Foxgloves, but with blooms all around the stem, giving even more impact.

'Camelot' Foxgloves are superior, F1 hybrid quality, and plants will flower in the same year that they are planted. Digitalis are ideal for cottage garden borders, are easy to grow and will last for many years. Height: 120cm (48"). Spread: 45cm (18").

 

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

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 2 x 3 litre potted foxglove plants

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

Thalictrum 'Black Stockings' (Large Plant)

Meadow Rue

The black, shimmering stems of Thalictrum 'Black Stockings' carry plenty of fluffy mauve flowers during the height of summer. This tall, willowy perennial is ideal for filling gaps in shaded borders and woodland gardens, where the delicate foliage is a useful backdrop for shorter perennials.

Thalictrum plants combines well with almost any other plant in your shady border; from ferns to hostas or even larger-leaved plants such as Rodgersia. The foliage can also be useful to add a light airy feel to summer bouquets. Height: 200cm (79"). Spread: 75cm (30").

 

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

    • Despatch: By end of July 2016
    •  
    • £11.99
    • 2 x 3 litre potted thalictrum plants

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

Aubrieta cultorum 'Cascade Purple' (Large Plant)

Aubretia

Despite it diminutive size, this mat forming perennial really packs a punch in spring. Deep purple flowers cover the semi-evergreen foliage in a prolific display. The nectar rich blooms are particularly popular with bees and other pollinating insects. As its name suggests, Aubrieta cultorum 'Cascade Purple' is perfect for spilling from crevices in walls and banks, or carpeting a sunny corner of the rockery. This hardy perennial is fuss free and easy to grow, even tolerating exposed, windy positions. Height: 10cm (4"). Spread 40cm (16").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted aubrieta plants

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

Iris 'Cantina' (Re-Blooming)

The bold, violet blooms of Iris 'Cantina' are a magnificent sight in summer borders. With the first flowers appearing in late spring and continuing into summer, these really are outstanding hardy perennials. These majestic bearded iris flowers have a delicate scent and make impressive cut flowers for a vase indoors. Height: 90cm (36"). Spread: 40cm (16"). More info
    • 1 Iris rhizome

    • Despatch: By end of September 2016
    •  
    • £8.99

Wallflower 'Bowles's Mauve' (Large Plant)

Erysimum, Cheiranthus

Flowering from February right through to midsummer, this hardy perennial well deserves its RHS AGM. Although relatively short lived, Wallflower 'Bowles Mauve' makes up for it in sheer flower power, producing masses of mauve flowers above clumps of grey-green, evergreen foliage. Versatile and undemanding, this tough little Eryisimum copes in even the poorest of soils. Perfect for filling beds and containers with long lasting colour. Height: 75cm (30"). Spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1.5 litre potted wallflower plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1.5 litre potted wallflower plants

    • Despatch:
    •  
    • £16.99
    • Out of stock