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.


For beautiful summer flowers browse our range of annual plants.



We have found 17 products.
 

Geum 'Banana Daiquiri' (Cocktails series) (Large Plant)

Avens

The refreshing, lemon yellow flowers of Geum 'Banana Daiquiri' are borne above neat clumps of semi evergreen foliage in late spring. Carried on fuzzy stems, each bloom is semi double with a whirl of yellow anthers at its centre. This neat little Avens makes a useful hardy perennial for the front of borders. Take a few of the blooms for a late spring posy - they make great cut flowers! Height: 45cm (18").Spread: 35cm (14").

 

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

    • Despatch: By end of July 2016
    •  
    • £7.99
    • 1 x 2 litre potted geum plant

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

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

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

Parahebe 'Snow Clouds'

  • Spring displays just got more interesting
  • New hardy perennial for early season containers
  • Mix with your favourite spring bedding or other early perennials

Seasonal flower colour is what we do best! We’re pleased to add this hardy late spring perennial to our books so you can bridge the gap between spring and summer displays. This relatively unknown perennial plant offers a low-growing habit and clouds of white blooms, each with a striking central ‘pheasant’s eye’. Use Parahebe ‘Snow Cloud’ as floral groundcover around larger perennials, or grow it tumbling out of walls and rockeries. In containers, mix with other spring perennials or seasonal bedding plants and bulbs. Height: 15cm (6"). Spread: 35cm (14").
More info
    • 1 x parahebe jumbo plug plant

    • Despatch: By end of August 2016
    •  
    • £8.99
    • 2 x parahebe jumbo plug plants

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

Shasta Daisy 'Real Dream' (Large Plant)

Leucanthemum × superbum, Chrysanthemum maximum, Shasta Daisy

A lovely dwarf cultivar, Shasta Daisy 'Real Dream' is delightfully compact. This well branched Leucanthemum produces pale yellow blooms from July to August that slowly fade to white as they age. Like all Shasta daisies, this variety is a magnet for pollinating insects and makes a valuable addition to wildlife gardens. This hardy perennial is ideal for growing in low drifts through the front of borders where its cheery blooms will always raise a smile. Height: 40cm (16"). Spread: 35cm (14").

 

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

    • Despatch: By end of July 2016
    •  
    • £7.99
    • 2 x 1 litre potted leucanthemum plants

    • Despatch: By end of July 2016
    •  
    • £12.99

Shasta Daisy 'Real Neat' (Large Plant)

Leucanthemum x superbum, Chrysanthemum maximum, Shasta Daisy

Every sunny border needs a Shatsta Daisy and this one is neat enough for even the smallest of gaps! Shasta Daisy 'Real Neat' is a compact dwarf cultivar with pure white petals that surround a central gold boss. Flowering freely from early summer, this hardy perennial attracts masses of pollinating insects. Like all Leucanthemums, it makes an excellent cut flower. An easy to grow perennial for cottage garden borders, wildlife areas and cut flower gardens. Height: 40cm (16"). Spread: 35cm (14").

 

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

    • Despatch: By end of July 2016
    •  
    • £7.99
    • 2 x 1 litre potted leucanthemum plants

    • Despatch: By end of July 2016
    •  
    • £12.99

Geranium 'Best Red' F1 Hybrid

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating

This exceptional variety, Geranium F1 'Best Red' outperformed all others in our trials. The uniform, well branched plants become smothered in large, shapely scarlet flowers that retain their form, without shattering as they fade. These vigorous pelargonium plants are guaranteed to create a top performance in beds, borders and containers. Height: 45cm (18"). Spread: 35cm (14").


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.

 

Buy this variety in a larger plant size
More info
    • 36 geranium plug plants

    • Despatch:
    •  
    • £11.99
    • Out of stock
    • 36 geranium plug plants + 100g of geranium fertiliser

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 72 geranium plug plants

    • Despatch:
    • SAVE *£5.99  
    • £23.98 £17.99
    • Out of stock

Geranium 'Blushing Sophie'

Pelargonium, Zonal Geranium, Zonal Pelargonium

This pretty zonal geranium produces gorgeous, double pink blooms with a sweet apricot blush, on compact plants throughout summer. Geranium 'Blushing Sophie' has a lovely old fashioned appearance but is perfect for the modern patio, fitting neatly into beds, borders, window boxes and patio containers. Height: 40cm (16"). Spread: 35cm (14").
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:
    •  
    • £13.99
    • Out of stock
    • 10 geranium jumbo plug plants

    • Despatch:
    • SAVE *£8.99  
    • £27.98 £18.99
    • Out of stock

Geranium 'Azalea-Flowered Collection'

Pelargonium, Ivy-leaved Geranium, Ivy-leaved Pelargonium

  • Incredible new azalea-flowered form
A dazzling collection of ivy leaved geraniums with flamboyant double flowers in shades of pink, burgundy and red, including a stunning bicolour variety. The trailing stems and dense, glossy green foliage makes Geranium 'Azalea-Flowered Collection' ideal for hanging baskets, patio containers and window boxes. Deadhead the flowers regularly to ensure lashings of vibrant colour throughout the summer months. Trails to: 35cm (14").
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:
    •  
    • £14.99
    • Out of stock
    • 10 geranium jumbo plug plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

Geranium 'Jackpot Mixed' F1 Hybrid

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • Stunning blooms will last all summer
These weather tolerant, F1 hybrid pelargoniums have more than enough vigour to ensure a spectacular, free flowering display throughout summer. Geranium 'Jackpot Mixed' produce masses of colourful single blooms on neat compact plants. Perfect for filling beds, borders and patio containers. Height: 40cm (16"). Spread: 35cm (14").
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.

 

Buy this variety in a larger plant size
More info
    • 36 geranium plug plants

    • Despatch:
    • SAVE £6  
    • £13.99 £7.99
    • Out of stock
    • 36 geranium plug plants + 100g of geranium fertiliser

    • Despatch:
    •  
    • £13.99 £8.99
    • Out of stock
    • 72 geranium plug plants

    • Despatch:
    • SAVE £6.00  
    • £18.99 £12.99
    • Out of stock

Iris sibirica Collection

The breeding behind our unique iris collection brings more grace and beauty to this cottage garden favourite than ever before. Four exclusive varieties, all enhanced with crested double iris flowers for extra elegance and a frenzy of summer colour in your borders. Each flower has in excess of 20 petals, bringing a rose-like appearance to the luxuriant blooms. Iris sibirica Collection are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14").


  • Collection comprises:
  • Iris 'Imperial Opal' - Translucent lavender-pink blooms with light edging and white throat.
  • Iris 'Pink Parfait' - Soft lavender-pink blooms with lighter edging. A yellow centre with white halo can be seen as flowers open fully.
  • Iris 'Concord Crush' - Rich violet-blue blooms with gold and white central blaze.
More info
    • 3 bare root iris plants - 1 of each variety

    • Despatch:
    •  
    • £12.99
    • Out of stock

Iris 'Concord Crush'

Iris sibirica, Iris sibirica

Iris 'Concord Crush' sports heavily petalled, elegant violet-blue flowers with a deeply ruffled form. Iris sibirica are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14"). More info
    • 1 bare root iris plant

    • Despatch:
    •  
    • £6.99
    • Out of stock

Iris 'Imperial Opal'

Iris sibirica, Iris sibirica

Iris 'Imperial Opal' bears translucent lavender-pink blooms with light edging and an eye-catching white throat. Iris sibirica are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14"). More info
    • 1 bare root iris plant

    • Despatch:
    •  
    • £6.99
    • Out of stock

Iris 'Pink Parfait'

Iris sibirica

Iris 'Pink Parfait' produces soft lavender-pink blooms with lighter edging. As the flowers open fully, a yellow centre with a white halo can be seen. Iris sibirica are tough performers, equally at home in moist, boggy soils and dry areas, and will enhance any garden border, especially mixed with other flower hardy perennials. Lush grass-like foliage makes for a good seasonal border filler. Height: 90cm (36"). Spread 35cm (14"). More info
    • 1 bare root iris plant

    • Despatch:
    •  
    • £6.99
    • Out of stock