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 36 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 June 2016
    • + FREE £5 voucher  
    • £8.99
    • 5 heuchera Postiplug plants

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

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

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

Brunnera 'Alexander's Great'

Brunnera macrophylla

A statement large-leaved foliage plant for borders and large containers. This hardy perennial returns bigger and better each spring producing neat clumps of heavily silver-veined leaves for dramatic effect in the garden. Use Brunnera 'Alexander's Great' as an underplanting to trees and shrubs or add in with your favourite border perennials for a winning mixed display. Sprays of airy sky-blue flowers on wirey stems also appear in spring to create extra seasonal interest. This low maintenance perennial plant thrives in shade but will happily perform in sunny locations too. Use Brunnera 'Alexander's Great' in containers on the patio to add contrast to your favourite seasonal bedding plants. Height: 40cm (16"). Spread: 90cm (36"). More info
    • 2 brunnera jumbo plug plants

    • Despatch: By end of August 2016
    •  
    • £14.99
    • 4 brunnera jumbo plug plants

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

Helianthemum Collection

These tough little rock roses are hardy, drought tolerant and trouble-free, producing glorious colour from late spring to midsummer. If pruned after flowering, they'll even reward you with a second flush of blooms in late summer! The nectar-rich flowers, set against a backdrop of silvery, semi-evergreen foliage, are loved by bees and other insects. This helianthemum collection makes excellent groundcover or a versatile addition to rockeries or hot, dry borders. Height: 20cm (8"). Spread: 30cm (12").
  • Collection comprises the following varieties:
  • Helianthemum 'Ben Mohr' - Orange, saucer shaped flowers.
  • Helianthemum 'Pink Angel' - An abundance of delicate double, pink flowers.
  • Helianthemum 'The Bride' - A pretty, white rock rose with an RHS Award of Garden Merit.
  • Helianthemum 'Ben Fhada' - Bright, primrose yellow blooms with golden egg-yolk centres.
  • Helianthemum 'Peachy Keen' - New peach bloomed variety 'Peachy Keen' has an overwhelming amount of petals, further boosting the effect in your garden!
More info
    • 5 helianthemum jumbo plug plants - 1 of each variety

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 10 helianthemum jumbo plug plants - 2 of each variety

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

Sedum 'Herbstfreude' (Large Plant)

Sedum spectabile 'Autumn Joy', Stonecrop

Sedum are a magnet for butterflies in the garden; and are reliable, hardy and always colourful! Sedum 'Herbstfreude' forms a clump, with drought tolerant, fleshy foliage, and pink autumn blooms.

Sedum are most at home in hot, sunny borders, and require zero maintenance, so are ideal for beginners. Their autumn flowering period is useful for extending the season of interest in the garden. Height and spread: 60cm (24").

More info

    • 1 x 3.5 litre potted sedum plant

    • Despatch:
    •  
    • £10.99
    • 2 x 3.5 litre potted sedum plants

    • Despatch:
    •  
    • £19.99

Mukdenia 'Karasuba'

Mukdenia 'karasuba'

Here's a hardy perennial you've likely never seen before! The palmate, rounded, green leaves of Mukdenia karasuba acquire a pronounced crimson red colour in the leaf tips throughout summer. But, whilst you're waiting for that fabulous summer foliage display you'll enjoy white, bell-shaped flowers on naked stems in early spring. Definitely something different for the garden! This low growing hardy perennial makes the ideal ground cover option for shady spots in the garden, where the flowers will really stand out in the gloom. Height: 30cm (12"). Spread: 40cm (16"). More info
    • 1 bare root mukdenia plant

    • Despatch: By end of November 2016
    •  
    • £12.99
    • 2 bare root mukdenia plants

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

Brunnera macrophylla 'Jack Frost' (Large Plant)

Siberian Bugloss

Grown for it's large, heart shaped, silver leaves with a sparkling metallic sheen that will brighten the shadiest borders. In Spring, the neat clumps of foliage are complimented by delicate sprays of sky blue flowers. Brunnera macrophylla 'Jack Frost' is a resilient, quick growing hardy perennial, making useful ground cover in those tricky shady areas. Try planting this Siberian Bugloss among hardy ferns for a woodland feel or throughout the front of cottage garden borders. Height: 45cm (18"). Spread: 60cm (24").

 

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

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 3 litre potted brunnera plants

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

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").

 

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

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

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

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 June 2016
    •  
    • £9.99
    • 2 x 8cm potted vinca minor plants

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

Cyclamen hederifolium (Large Plant)

Cyclamen neapolitanium, Ivy-leaved Cyclamen, Sowbread

A delightful little plant producing delicate pink flowers with reflexed petals in the autumn. Often emerging after the flowers, the heart-shaped deep green leaves are patterned with silver, creating a striking marbled effect. Cyclamen hederifolium is a superb ground-cover plant in rock gardens and woodland gardens where it will self-seed freely to create carpets of foliage and flowers from autumn to spring, before the foliage dies back in summer. Height: 10cm (4"). Spread: 15cm (6").

 

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

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

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

Geranium cinereum 'Jolly Jewel Collection'

  • Create a carpet of colour
  • Weed-suppressing Hardy Geranium
  • Long flowering season

The dense foliage on these mat-forming plants are ideal for carpeting difficult dry, sunny banks or filling space in borders and rockeries. Plants hug the ground, meaning the weeds don't even get a look in! These long-lived hardy Geraniums are tough and last for years. The 'Jolly Jewel' series boasts a fruity selection of colours, barely resting it's flower power from spring to late summer. Height: 25cm (10"). Spread: 30cm (12").
More info
    • 3 x 9cm potted geranium plants

    • Despatch: By end of September 2016
    •  
    • £19.99
    • 6 x 9cm potted geranium plants

    • Despatch: By end of September 2016
    •  
    • £29.99

Vinca minor 'Gertrude Jekyll'

Lesser Periwinkle

The spreading stems of Vinca minor 'Gertrude Jekyll' provide glossy, evergreen foliage that makes useful, weed-beating ground cover. This lovely Lesser Periwinkle flowers relentlessly from spring to autumn. The pure white blooms will brighten even the shadiest position in the garden. Vinca is ideal for tricky areas where nothing else will grow. This low growing, creeping plant will thrive in the most inhospitable of places and requires little attention or maintenance. Height: 20cm (8") Spread: 50cm (19"). More info
    • 1 x 9cm potted vinca minor plant

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 2 x 9cm potted vinca minor plants

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

Osteospermum 'Tresco Purple' (Hardy)

Osteospermum 'Nairobi Purple', African Daisy, Cape Daisy

Bold pink daisy flowers open every morning to greet the sun. Versatile and resilient, hardy Osteospermum 'Tresco Purple' will thrive in hot, dry, neglected conditions and yet is one of the longest-flowering plants in the garden! Expect vibrant summer colour and weed suppressing ground cover from this easy to grow, sun loving Cape Daisy. Height: 40cm (16"). Spread: 90cm (36").
More info
    • 3 osteospermum jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £11.99