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 34 products.
 

Hellebore 'Washfield Doubles'

Helleborus x hybridus

 Customer Rating

Breathtaking, double-flowered hellebores from the 'Washfield' collection that are bred to perfection. Intriguing colours, patterns, flecks and ruffles are a sheer delight during the cold months of winter and early spring, while their leathery palmate foliage has an evergreen presence all year round. These delightful doubles come in a wide colour range including yellows, greens, blacks, reds, apricots and many other shades. Height and spread: 40cm (16").

More info
    • 5 x 7cm potted hellebore plants

    • Despatch: By end of July 2016
    •  
    • £13.99
    • 10 x 7cm potted hellebore plants

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

Verbena bonariensis 'Lollipop'

Glandularia, Verbena patagonica

 Customer Rating
  • Unique mini Verbena for your patio
Like its parents, Verbena bonariensis 'Lollipop' boasts the same tight clusters of floating purple flowers, but has short, compact stems that reach only half the height. Well shaped, uniform plants with an open airy habit attract butterflies to their glowing blooms from June to September. This fabulous hardy dwarf verbena is perfectly proportioned for patio pots and the front of borders where it creates a wonderful delicate airy effect. Height and spread: 60cm (24").
More info
    • 3 verbena jumbo plug plants

    • Despatch: By end of July 2016
    •  
    • £11.99
    • 6 verbena jumbo plug plants

    • Despatch: By end of July 2016
    • SAVE *£5.99  
    • £23.98 £17.99

Rudbeckia hirta 'Cherokee Sunset' (Garden Ready)

  • Enjoy the hot colours of rudbeckia, even when it's cool in your garden!
  • The fast-track to a hassle-free garden - just plant, water and enjoy!
  • Quality plants delivered to your door, hardened off and ready to plant out
  • Fully-grown, super-robust, healthy plants
Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.

As a result of over 10 years breeding and selection by T&Ms flower breeders, Rudbeckia Cherokee Sunset® was born. Never before has there been such a spectacular range of colours of fully double to semi-double Rudbeckia, with large 3-4in blooms. Shades of golden yellow, orange, bronze and mahogany make up this stunning blend that resembles the attractive colour spectrum of an Indian Sunset. Vigorous, free branching plants, with strong stems, which flower over a long period from mid summer to early autumn. Cherokee Sunset® is outstanding for adding height, colour and interest to beds, borders and large containers. Also makes an impressive cut flower. T&M are proud to be the first UK packet seed company to have an All American Selection Winning variety from its own breeding programme. This prestigious award is presented to varieties that have outstanding garden performance, quality blooms, a unique colour range and that show a significant improvement over existing varieties of the species.

 

Garden ready special offer
More info
    • 30 rudbeckia garden ready plants

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

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

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

Heucherella 'Trailing Collection'

  • New hanging basket plant!

A cross between Heuchera and Tiarella, these trailing hardy perennials look fabulous billowing out of hanging baskets, window boxes and patio containers, where the broad-lobed, evergreen leaves provide all-year-round interest! Grow them alone for a fountain of foliage, or in mixed baskets to add texture and contrast. Vigorous and easy to grow, Heucherella 'Trailing Collection' also makes a fantastic groundcover plant for sun or part shade. Height: 25cm (10"). Spread: 60cm (24").


  • Collection comprises:
  • Heucherella 'Crimson Cascade' - Wonderful green to copper-red foliage with contrasting dark veins.
  • Heucherella 'Yellowstone Falls' - Striking lime green leaves with crimson markings.
  • Heucherella 'Redstone Falls' - Vibrant green and ruby red leaves creating a mixture of autumnal colours which change with the seasons.
More info
    • 3 heucherella jumbo plug plants

    • Despatch: By end of October 2016
    • SAVE £5  
    • £14.99 £9.99
    • 6 heucherella jumbo plug plants

    • Despatch: By end of October 2016
    • SAVE £7  
    • £19.99 £12.99

Meconopsis grandis 'Lingholm'

Himalayan Blue Poppy

 Customer Rating
A perennial wow factor for a difficult, damp shady corner. I just love the indescribable blue colour of Meconopsis blooms; once seen, never forgotten! This specially selected strain acts as a perennial too, lasting in the garden for many years. Height: 75cm (30"). Spread: 50cm (20").
More info
    • 2 meconopsis jumbo plug plants

    • Despatch: By end of September 2016
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    • £12.99
    • 4 meconopsis jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £17.99

Aquilegia 'Swan Mixed'

Columbine, Granny's Bonnet

A lovely mix of colourful columbines, producing an abundance of large flowers on upright, multi-branched stems. Aquilegia 'Swan Mixed' are longer flowering than many aquilegias, and left to naturalise, they will quickly fill your garden with drifts of spring colour. Perfect for cottage gardens, perennial borders and woodland gardens. Height: 30cm (12"). Spread: 25cm (10"). More info
    • 6 aquilegia plug plants

    • Despatch: By end of August 2016
    •  
    • £5.99

Phlox paniculata 'Peppermint Twist' (Large Plant)

Perennial Phlox

Delightfully dwarf, this perennial Phlox reaches just 45cm (18") tall! Charming pink and white pinwheel blooms will fill the air with the most exquisite fragrance. With its neat, bushy habit, Phlox paniculata 'Peppermint Twist' is perfect for patio containers - plant it next to a doorway where you can really appreciate their fragrance. Highly attractive to pollinating insects, this pretty variety will brighten up the front of borders, and also makes a pleasing cut flower. Height and spread: 45cm (18"). ,

Culinary note: Some parts of these flowers are edible. Add the small flowers to fruit salads or crystallise them for decorating desserts. For more details about edible flowers click here.

 

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

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

    • Despatch: By end of July 2016
    • SAVE *£5.99  
    • £25.98 £19.99

Cosmos atrosanguineus 'Eclipse'

Bidens atrosanguinea, Chocolate Plant

We've topped our chocolate cosmos offering with the richest scent and colour. Cosmos 'Eclipse' surpasses all previous introductions with a scent that is utterly divine, emanating from deeply rich maroon flowers that are so dark and sensual they appear almost black – certainly the darkest cosmos you'll find on the market. Cosmos 'Eclipse' is the must-have garden plant for all chocaholics out there, the rich scent will fill the garden on a calm sunny day - you'll think someone has unwrapped your favourite chocolate bar! These sturdy cosmos plants add luxury and scent to summer containers and seasonal bedding displays. If you are looking to get 'beach fit' for you summer holiday this year, Cosmos 'Eclipse' might not be for you - you'll be heading for the snack cupboard every time you walk past your plants! Height: 45cm (18"). Spread 30cm (12"). More info
    • 4 cosmos Postiplug plants

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 8 cosmos Postiplug plants

    • Despatch: By end of July 2016
    • SAVE *£1.99  
    • £19.98 £17.99

Mimulus x hybridus 'Magic Rainbow'

Diplacus, Monkey Flower, Musk

 Customer Rating
These low growing, bushy mimulus plants produce masses of tubular blooms, looking much like exotic, wide snapdragon flowers. Although monkey flowers are tender perennials, they are best treated as an annual for beds, containers and baskets, except in the mildest parts of the country. Mimulus 'Magic Rainbow' is ideal to add a bright splash of summer colour from June to August in lightly shaded, moist beds in the garden. Height and spread: 30cm (12").
More info
    • 36 mimulus plug plants

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

    • Despatch:
    • SAVE *£7.99  
    • £25.98 £17.99
    • Out of stock

Actaea cordifolia (Large Plant)

Cimicifuga racemosa var. cordifolia, Bugbane, Cohosh

 Customer Rating

Cimicifuga is an attractive border perennial with an exotic appearance. Actaea has a robust habit, and can fill a gap in the border with its fancy foliage and summer flower spikes, which are tall and imposing.

The flower spikes of Actaea are made up of many tiny florets, and these have a spicy fragrance. Cimicifuga is a long-lasting plant, surviving for many years, and is very useful for difficult situations, such as cold, wet corners of the garden. Height: 1m (39"). Spread: 50cm (20").

 

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

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 2 x 1 litre potted actaea plants

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

Dicentra spectablis (Large Plant)

Lamprocapnos spectabilis, Bleeding Heart, Dutchman's Breeches, Lyre Flower

Charming rose-pink, heart shaped flowers dangle enticingly from elegant arching stems, giving this plant its common name of Bleeding Heart. This beautiful spring flowering perennial is one of the earliest to bloom each year, often continuing into early summer. The finely-cut foliage forms attractive clumps that increase year after year, at a slow but steady rate. This graceful hardy perennial enjoys a reliably moist soil, making it ideal for damp woodland areas as well as cottage garden borders. Dicentra spectabilis holds an RHS AGM for its superb garden performance and makes a worthy addition to any Spring garden. Height: 120cm (48"). Spread: 45cm (18").

 

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

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 2 x 3 litre potted dicentra plants

    • Despatch:
    • SAVE *£5.99  
    • £25.98 £19.99
    • Out of stock