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 27 products.
 

Brunnera 'Alexander's Great'

Brunnera macrophylla, Siberian Bugloss

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 April 2016
    •  
    • £14.99
    • 4 brunnera jumbo plug plants

    • Despatch: By end of April 2016
    • SAVE £4.99  
    • £29.98 £24.99

Alstroemeria 'Rock 'n' Roll'

Peruvian Lily

  • Flowers until November
Ten years of breeding by Australia's leading specialists have produced this unusual new Alstromeria with amazing variegated foliage. This fantastic Peruvian Lily grows just as well in sun as in shade, with no burning of the creamy foliage. Alstroemeria 'Rock 'n' Roll' is super hardy, withstanding temperatures down to -10°C (14F). Perfect for borders and patios where it will flower continuously throughout summer, producing beautiful stems that are ideal for cutting. Height: 75cm (30"). Spread: 60cm (24").
More info
    • 1 alstroemeria jumbo plug plant

    • Despatch: By end of April 2016
    •  
    • £14.99
    • 3 alstroemeria jumbo plug plants

    • Despatch: By end of April 2016
    • SAVE £4.99  
    • £29.98 £24.99

Geranium 'Evka'

Pelargonium, Pelargonium 'Penevro', Ivy-leaved Geranium, Ivy-leaved Pelargonium

  • The 'stand out' geranium from our trials
Masses of tiny, cream edged leaves contrast beautifully with the spectacular scarlet blooms of Geranium 'Evka'. The long, cascading stems of this trailing Ivy leaf geranium are perfect for a dramatic display in hanging baskets and window boxes. Height: 50cm (20"). Spread: 30cm (12").
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 5 geranium jumbo plug plants

    • Despatch: By end of April 2016
    •  
    • £11.99
    • 10 geranium jumbo plug plants

    • Despatch: By end of April 2016
    • Save £6.99  
    • £23.98 £16.99

Iris pallida 'Variegata' (Large Plant)

Iris pallida 'Aurea Variegata', Iris pallida 'Argentea Variegata', Bearded Iris

Iris pallida ‘Variegata’ gives interest all-year round and is truly spectacular. Even before the fragrant, lilac-blue flowers appear, your plants will be playing host to showy, cream-lined foliage. This is quite a collectable Iris, which is actually very easy to grow too!

Grow Iris pallida ‘Variegata’ in full sun for the very best and brightest leaf colours. These spectacular Bearded Iris plants are perfect for adding height and structure to the middle of borders, where it can really show off. An easy to grow perennial, which is ideal for beginners. Height: 120cm (48"). Spread: 40cm (16").

 

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

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

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

Hosta 'So Sweet' (Large Plant)

Plantain Lily

A compact variegated variety forming neat clumps of glossy mid-green foliage with pale yellow margins. From July to August, the funnel shaped blooms appear on short stems above the foliage. As the name suggests, the lilac-white flowers of Hosta ‘So Sweet’ are deeply fragrant. A lovely choice for a prominent spot at the front of moist borders. Unlike some variegated forms, Hosta ‘So Sweet’ will tolerate some sun. Height: 35cm (14"). Spread: 55cm (22").

 

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

    • Despatch: By end of February 2016
    •  
    • £13.99
    • 2 x 2 litre potted hosta plants

    • Despatch: By end of February 2016
    •  
    • £21.99

Hosta 'Wide Brim' (Large Plant)

Plantain Lily

A well known variety that holds an RHS AGM for its garden performance. Hosta ‘Wide brim’ has heavily puckered, variegated foliage with deep green centres and pale gold margins. Lilac blue, funnel shaped flowers appear on tall stems throughout July. This clump forming perennial has an attractive mounding habit that creates a dense, rounded plant over time. A popular choice for a shaded position. Height: 45cm (18"). Spread: 100cm (39").

 

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

    • Despatch: By end of February 2016
    •  
    • £13.99
    • 2 x 2 litre potted hosta plants

    • Despatch: By end of February 2016
    •  
    • £21.99

Hosta 'Great Expectations' (Large Plant)

Plantain Lily

A lovely cultivar with thick, variegated leaves that have a naturally stiff habit. The heart shaped foliage is yellow, fading to white towards the centre of each leaf, with irregular blue green margins. From June to July, Hosta ‘Great Expectations’ produces white, bell shaped flowers above the foliage. Although slow growing, this superb variety is well worth the wait and proves to be reasonably slug resistant. Height: 70cm (27"). Spread: 120cm (48").

 

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

    • Despatch: By end of February 2016
    •  
    • £13.99
    • 2 x 2 litre potted hosta plants

    • Despatch: By end of February 2016
    •  
    • £21.99

Ajuga reptans 'Rainbow' (Large Plant)

Ajuga reptans 'Multicolor', Bugle

Grown for its extraordinary foliage, Ajuga reptans 'Rainbow’ forms a dense mat of multicoloured groundcover. The rounded leaves are streaked and spotted with bronze, yellow, pink and cream, brightening even the shadiest corner of the garden. In early summer, the blue flower spikes of Bugle attract bees and pollinating insects. This low growing evergreen perennial has a reputation for being tough and resilient, spreading through the front of borders, rockeries and woodland areas with ease. Height: 15cm (6"). Spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 9cm potted ajuga plant

    • Despatch: By end of February 2016
    •  
    • £7.99
    • 2 x 9cm potted ajuga plants

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

Vinca minor 'Illumination' (Large Plant)

Lesser Periwinkle

Vinca minor ‘Illumination’ is particularly striking, with gold-splashed foliage, paired with cobalt-blue flowers. This vigorous, carpeting shrub will thrive in virtually any garden position, from sun to deep shade. Its colourful foliage makes it especially useful for brightening dark corners.

Vinca minor is less vigorous than its larger cousin Vinca major, making it easier to confine to its allotted space. Periwinkle plants are easy to grow, flowering relentlessly from spring to autumn. A popular choice for landscaping and low-maintenance gardens. Height: 20cm (8") Spread: 50cm (19").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 10.5cm potted vinca minor plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 1 x 3.5 litre potted vinca minor plant

    • Despatch: By end of February 2016
    •  
    • £14.99
    • 2 x 10.5cm potted vinca minor plants

    • Despatch:
    •  
    • £16.99
    • Out of stock
    • 2 x 3.5 litre potted vinca minor plants

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

Lamium 'Mega Purple'

Dead-nettle

 Customer Rating
The glistening silvery foliage of Lamium 'Mega Purple' contrasts beautifully its mauve, open mouthed blooms. This resilient Dead Nettle loves a shady spot, where it will quickly form a carpet of shimmering leaves. Flowering throughout the summer, its nectar rich blooms are a magnet for pollinating insects making it ideal for wildlife gardens, cottage garden borders and woodland areas. This easy to grow hardy perennial is practically indestructible - the perfect choice for 'no-fuss' ground cover. Height: 30cm (12"). Spread: 45cm (18").
More info
    • 3 Lamium Postiplug plants

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 6 Lamium Postiplug plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Hosta fortunei 'Albomarginata' (Large Plant)

Plantain Lily

Hosta are one of the best shade-loving plants, thriving in moist, damp, dark areas, but also coping well with dry shade. The bold, colourful foliage is robust and weatherproof. Plants are quick-growing, clump-forming and are maintenance-free.

Hosta fortunei ‘Albomarginata’ has particularly eye-catching leaves, which are ribbed, puckered and in edged in creamy-white. During the height of summer, a surprise display of showy, sometimes fragrant, flowers. Height: 55cm (22"). Spread: 100cm (39").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

Hosta fortunei var. aureomarginata (Large Plant)

Plantain Lily

Hostas are very useful shade-loving plants, which can thrive in moist, damp, dark borders, or difficult, dry shady borders. Plants are quick-growing, clump-forming and the bold leaves are colourful, robust and weatherproof.

Hosta fortunei ‘Aureomarginata’ has ribbed leaves, in pure green and edged in golden-yellow. During the summer, purple, bell-shaped flowers appear on showy, 90cm (36") stems. Excellent ground cover for shady borders. Height: 55cm (22"). Spread: 100cm (39").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock