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 170 products.
 

Gerbera 'Sweet Collection' (Hardy)

Barberton Daisy, Transvaal Daisy

 Customer Rating
  • Bigger and better winter hardy gerberas
  • Three seasons of stunning colour
Growing Gerberas outdoors was virtually inconceivable ten years ago. Now these 2nd generation hardy Gerberas can be grown year round in the border! Gerbera 'Sweet Collection' produces plenty of classic daisy blooms that are twice the size of other hardy Gerberas, and make fabulous cut flowers. Blooming reliably from June to October, these wonderful clump forming hardy perennials make a big impact in borders and patio containers. Height and spread: 45cm (18").
More info
    • 3 x 7cm potted gerbera plants (1 of each variety)

    • Despatch: By end of September 2015
    •  
    • £19.99

Verbena bonariensis (Large Plant)

Glandularia, Verbena patagonica

Tightly clustered florets form glowing lavender flower heads that float atop stiffly upright, branching stems. The long lasting blooms of Verbena bonariensis attract clouds of bees and butterflies. This perennial verbena has enjoyed a resurgence in popularity in recent years, associating beautifully with grasses for a tranquil planting scheme, or adding a touch of architectural style to the back of herbaceous borders. This elegant perennial is at its most effective when planted in large swathes. Height: 200cm (79"). Spread: 45cm (18"). More info
    • 1 x 2 litre potted verbena plant

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 2 x 2 litre potted verbena plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Osteospermum jucundum var. compactum (Hardy)

African Daisy, Cape Daisy

Irrepressibly cheerful, bright pink daisy flowers smother carpets of low growing foliage. Versatile and resilient, hardy Osteospermum jucundum var. compactum will thrive in hot, dry, neglected conditions, yet remains one of 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: 15cm (6"). Spread: 90cm (36").
More info
    • 3 osteospermum jumbo plug plants

    • Despatch: By end of October 2015
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    • £11.99

Anemone 'Queen Charlotte'

Japanese Anemone, Anemone x hybrida 'Konigin Charlotte'

It's easy to overlook the late show in your garden, as you scramble to fill it with summer colour. But, these superb Japanese anemones will take the blooming relay torch from summer bedding and carry it well into the autumn. Anemone 'Queen Charlotte' is the pick of the bunch, with an extra layer of pure pink petals. Height: 90cm (35"). Spread: 60cm (24").

More info
    • 1 anemone jumbo plug plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 3 anemone jumbo plug plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

Penstemon 'Blackberry'

Satin, bell-shaped flowers in a rich shade of purple smother the upright stems of this hardy perennial. From June onwards, the long-lasting flowers are produced above glossy, semi-evergreen foliage and continue their display well into autumn, long after most other summer perennials have faded. Penstemon 'Blackberry' is undemanding and easy to grow, tolerating almost any position in the garden, regardless of rain or drought, and even resisting slug damage! Height: 75cm (30"). Spread: 40cm (16").
More info
    • 3 penstemon Postiplug plants

    • Despatch: By end of September 2015
    •  
    • £9.99

Aster novi-belgii 'Karminkuppel' (Large Plant)

Michaelmas Daisy, New York Aster

The Michaelmas Daisy is a classic late summer and autumn hardy perennial. Blooms of Aster novi-belgii 'Karminkuppel' are richly double, in the most glorious magenta pink, and produced in a flurry, extending the summer party in your garden.

Michaelmas Daisies are perfect for the cottage garden; they're such a quintessentially English plant. Easy to establish and lasting for many years in the garden. Height: 90cm (36"). Spread: 50cm (19").

More info
    • 1 x 1 litre potted aster plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted aster plants

    • Despatch: By end of September 2015
    •  
    • £16.99

Helenium 'Double Trouble' (Large Plant)

Helen's Flower, Sneezeweed

This modern variety is the first fully double Helen’s Flower! Its delightfully narrow, golden petals form a ruffled collar around a button-like centre. Helenium 'Double Trouble' is a tall, well branched form that makes a particularly good cut flower. Blooming from July to October, this hardy perennial brings fabulous late summer colour to cottage garden borders and wildlife areas, where it will attract plenty of pollinating insects. Height: 80cm (31"). Spread: 60cm (24"). More info
    • 1 x 1 litre potted helenium plant

    • Despatch: By end of September 2015
    •  
    • £7.99
    • 1 x 2 litre potted helenium plant

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 1 x 3 litre potted helenium plant

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 2 x 1 litre potted helenium plants

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 2 x 3 litre potted helenium plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Foxglove 'Sugar Plum'

Digitalis

  • New in 2015

A reworking of a cottage garden classic. Foxglove ‘Sugar Plum' is an improved form of old-time favourite ‘Pam's Choice'. Careful selection work has led to foxglove plants with a stronger border habit and impressive flower spikes. Each bloom now carries deeper speckling and all sit closer together on the stem for a fuller display. This biennial foxglove makes an eye-catching addition to mixed borders and formal woodland planting schemes. Height: 120cm (48"). Spread: 45cm (18").

More info
    • 24 foxglove plug plants

    • Despatch: By end of September 2015
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    • £12.99
    • 48 foxglove plug plants

    • Despatch: By end of September 2015
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    • £17.99

Aster ericoides 'Schneetanne' (Large Plant)

Crinitaria, Microglossa

Heath Aster is a pretty little plant, which is hugely attractive to butterflies, and perfect for the wildlife garden. The prostrate, semi-trailing habit of Aster ericoides 'Schneetanne' is great for ground cover on banks and in borders.

Asters are perfect for keeping the garden colourful and interesting, as they provide welcome autumn colour, when all the summer bedding has faded. Height: 50cm (19"). Spread: 1m (39").

More info
    • 1 x 1 litre potted aster plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted aster plants

    • Despatch: By end of September 2015
    •  
    • £16.99

Gerbera 'Sweet Dreams'

Barberton Daisy, Transvaal Daisy

  • T&M exclusive
  • Bigger and better winter hardy gerberas
  • Three seasons of stunning colour
Growing Gerberas outdoors was virtually inconceivable ten years ago. Now these 2nd generation hardy Gerberas can be grown year round in the border! Gerbera 'Sweet Dreams' produces plenty of cerise pink daisy blooms that are twice the size of other hardy Gerberas, and make fabulous cut flowers. Blooming reliably from June to October, these wonderful clump forming hardy perennials make a big impact in borders and patio containers. Height and spread: 45cm (18").
More info
    • 1 x 7cm potted gerbera plant

    • Despatch: By end of September 2015
    •  
    • £9.99

Eucalyptus gunnii (Large Plant)

Eucalyptus divaricata, Cider Gum, Ironbark

Prune this eye catching, hardy evergreen into an attractive shrub, or let it to grow into a magnificent tree. Young plants bear silvery blue foliage before producing more linear green leaves as the tree ages. Stems of eucalyptus leaves are excellent for adding to cut flower arrangements! The attractive flaking bark reveals exquisite shapes and patterns on the main trunk of mature specimens. Eucalyptus gunnii is fast growing and easy to care for, making an outstanding specimen plant. Height: Up to 25m (80ft) if not pruned. Spread: Up to 10m (32ft) if not pruned. More info
    • 1 x 3.5 litre potted eucalyptus plant

    • Despatch: By end of September 2015
    •  
    • £14.99
    • 2 x 3.5 litre potted eucalyptus plants

    • Despatch: By end of September 2015
    •  
    • £24.99

Wallflower 'Sugar Rush' (Pre-Planted Pot)

Erysimum

For hassle-free gardening, look no further than our pre-planted pots for easy summer-long colour. We’re always on the look out for ways to make life simpler for our gardening customers. So what could be easier than pots which are already planted up? We’ve taken the hard work out of creating wonderfully colourful displays - just order our pre-planted pots of your favourite varieties and position them where you’ll most enjoy their summer colour. Then all you need to do is water them and wait!

Winner in the 'Best New Bedding Plant' category at the Grower of the Year Awards 2013, this is one of the most exciting wallflowers to emerge in recent years. Dense, fragrant flower spikes in shades of cream, yellow, red and purple appear not only in the spring, but throughout the autumn too, blooming in just 6 weeks from an August planting! With a delightful sweet fragrance and compact, multi-branching habit, Wallflower 'Sugar Rush' is perfect for beds, borders, containers and window boxes, creating a mass of colour and scent when much of the garden is dormant. Versatile and undemanding, wallflowers are tough enough to cope in even the poorest soils. Height and spread: 30cm (12").
More info
    • 1 x wallflower pre-planted pot with 6 plants

    • Despatch: By end of September 2015
    • Buy any 2 packs for just £25  
    • £17.99