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 16 products.
 

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").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

Freesia 'Premium Collection'

Fabulous double Freesia flowers packed with that unmistakeable fresh fragrance! Freesia 'Premium Collection' combines some of the largest flowered varieties in a rainbow of summery colours. Grow Freesias in patio containers, sheltered borders and greenhouses for a perfumed display that will really tantalize the senses. Their strong arching stems make them perfect for adding to home-grown bouquets too! Height: 35cm (14"). Spread: 15cm (6"). More info
    • 20 freesia corms

    • Despatch: By end of November 2016
    •  
    • £9.99
    • 40 freesia corms

    • Despatch: By end of November 2016
    • SAVE *£4.99  
    • £19.98 £14.99

Sempervivum 'Mixed' (Large Plant)

Houseleek

Superb evergreen succulents form dense rosettes of foliage which meld together to create a living carpet. Sempervivum come in a fabulous range of forms and colours, with some even covered in spidery webbing. In summer, mature rosettes may produce panicles of star-shaped flowers. Although individual rosettes die after flowering, they are swiftly replaced by small offsets which quickly fill the gap. Commonly known as Houseleeks, these hardy perennials are extremely drought tolerant once established - perfect for planting in wall crevices, rockeries and alpine troughs. Height: 8cm (3"). Spread: 30cm (12").

 

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

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 2 x 1 litre potted sempervivum plants

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

Oxalis triangularis 'Burgundy Wine' (Large Plant)

Shamrock, Sorrel

The handsome ornamental foliage of this burgundy shamrock is rich burgundy-red with separate triangular shaped lobes. With an attractive summer display of tubular pink flowers, this frost tender perennial oxalis makes a delightful container plant for a conservatory or bright windowsill. In very mild areas Oxalis triangularis 'Burgundy' can be grown in sheltered borders or alpine gardens. Height: 20cm (8"). Spread: 30cm (12").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

Tropaeolum speciosum

Flame Nasturtium, Flame Flower, Flame Creeper

Exotic, spurred blooms in bright, vermillion red appear throughout summer in a rich explosion of colour. The vibrant blooms are followed by spherical blue fruits set against a backdrop of attractive dark green foliage. Tropaeolum speciosum is an intriguing climbing perennial that prefers a cool, sheltered position. This sought after plant creates a spectacular sight when grown through mature shrubs or scrambling over low walls. Height: 3m (10'). Spread: 1.2m (4').
More info
    • 2 bare root tropaeolum speciosum plants

    • Despatch: By end of February 2017
    •  
    • £12.99
    • 4 bare root tropaeolum speciosum plants

    • Despatch: By end of February 2017
    •  
    • £19.99

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 'Black Velvet Mix' F1

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • Rarely available

Dark, enigmatic foliage makes a startling foil for the beguiling bright blooms of Geranium 'Black Velvet Mix' in four striking colours. The unique black leaves, produced on upright bushy plants, are edged with just a hint of green. This boldly coloured zonal geranium makes a striking addition to pots, beds and borders for long lasting summer colour. Height: 40cm (14"). 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
    • 24 geranium plug plants

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

    • Despatch:
    • SAVE *£5.99  
    • £25.98 £19.99
    • Out of stock
    • 72 geranium plug plants

    • Despatch:
    • SAVE *£13.98  
    • £38.97 £24.99
    • Out of stock

Giant Geranium Collection

Pelargonium

  • The biggest geraniums you'll ever find

Enormous heads of bloom with exceptional weather resistance make these giant geraniums stand out from the rest! Raised from cuttings, these plants have increased vigour and abundant flowers that persist throughout summer if deadheaded regularly. Fantastic for creating dramatic patio displays or filling gaps in borders. Height: 60cm (24"). Spread: 50cm (20").


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.
  • Collection comprises:
  • Geranium 'Octavia Hill' - Bold scarlet
  • Geranium 'Salmon Princess' - Delicate candy pink.
  • Geranium 'Sassa' - Dark pink.
  • Geranium 'Flower Fairy Berry' - Rich cerise pink.
  • Geranium 'Maestro Salmon' - Dark pink.
More info
    • 5 geranium jumbo plug plants - 1 of each variety

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 15 geranium jumbo plug plants - 3 of each variety

    • Despatch:
    •  
    • £19.99
    • Out of stock
    • 30 geranium jumbo plug plants

    • Despatch:
    • SAVE *£53.95  
    • £83.94 £29.99
    • Out of stock
    • 100 geranium jumbo plug plants - 20 of each variety

    • Despatch:
    • SAVE £129.81  
    • £199.80 £69.99
    • Out of stock

Geranium 'Octavia Hill'

Pelargonium, Zonal Geranium, Zonal Pelargonium

Enormous heads of scarlet blooms with exceptional weather resistance make these giant geraniums stand out from the rest! Raised from cuttings, Geranium 'Octavia Hill' has increased vigour and abundant flowers that persist throughout summer if deadheaded regularly. Fantastic for creating dramatic patio displays or filling gaps in borders. Height: 50cm (20"). Spread: 45cm (18").
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:
    •  
    • £9.99
    • Out of stock

Geranium 'Custard Cream'

Pelargonium, Zonal Geranium, Zonal Pelargonium

  • The world's first true yellow geranium
For many years the elusive yellow geranium has been the holy grail of the plant world. There are plenty of dark cream varieties but few have captured that true yellow colour. Pelargonium enthusiasts will love Geranium 'Custard Cream' for its buttery yellow blooms and fabulous vigour. Created by the world's leading geranium breeder, this superb zonal pelargonium deserves a prominent place in your patio containers and borders this summer. Height: 30cm (12"). Spread: 25cm (10").
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
    • 1 x 10.5cm potted geranium plant

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 3 x 10.5cm potted geranium plant

    • Despatch:
    • SAVE *£19.98  
    • £38.97 £18.99
    • Out of stock

Geranium 'Swizzle Stick'

Pelargonium, Zonal Geranium, Zonal Pelargonium

Add some colour to your garden with this fuss-free zonal Pelargonium. Clusters of beautiful white flowers with a vivid-red, central splash are produced in abundance over a long flowering period. With its bushy foliage and unusual flower colours, Geranium 'Swizzle Stick' makes a fabulous choice for your patio containers. Height: 30cm (12"). Spread: 25cm (10").
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
    • 3 geranium jumbo plug plants

    • Despatch:
    •  
    • £9.99
    • 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