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 134 products.
 

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").

 

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    • 1 x 3 litre potted dicentra plant

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

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    • £25.98 £19.99
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Dicentra spectablis 'Alba' (Large Plant)

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

Dicentra spectablis 'Alba' is a pure white form of Bleeding Heart that makes an elegant springtime display. From April to May the delicate blooms drip gracefully from arching stems above clumps of attractive, finely cut leaves. The ghostly blooms of this hardy perennial are perfect for illuminating woodlands and damp shadowy corners of the garden, but will look equally impressive in a shaded patio container. Height: 120cm (48"). Spread: 45cm (18").

 

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

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

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    • £19.99
    • Out of stock

Geum 'Cosmopolitan' (Cocktails series) (Large Plant)

Avens

This new variety of Avens is particularly pretty with semi double, ruffles of petals in a blend of rose-pink and creamy-apricot. Geum 'Cosmopolitan' forms a neat clump of semi evergreen foliage that is well proportioned for the front of sunny borders. Flowering from late spring into summer, the nectar rich blooms of this hardy perennial are loved by pollinators and make delightful cut flowers too. Height: 60cm (24"). Spread: 45cm (18").

 

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

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    • £12.99
    • Out of stock
    • 2 x 2 litre potted geum plants

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    • £19.99
    • Out of stock

Geum 'Totally Tangerine' (Large Plant)

Avens

Gorgeous pale orange blooms rise above clumps of foliage on thin, wiry stems. This free-flowering Geum is a tough and reliable addition to perennial borders where it will bloom non-stop from early summer right through until early autumn. The warm orange blooms of Geum 'Totally Tangerine' also make fantastic cut flowers for a vase indoors. Height: 60cm (24"). Spread: 45cm (18").

 

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

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    • £12.99
    • Out of stock
    • 2 x 1 litre potted geum plants

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    • £19.99
    • Out of stock

Scabious 'Vivid Violet' (Large Plant)

Scabiosa

A relatively low growing variety with mauve-purple pincushion flowers carried above finely cut foliage. Scabious 'Vivid Violet' is more mildew resistant than many cultivars, and particularly free flowering from July to September. Like all Scabious, the blooms are a magnet for bees and butterflies and make useful cut flowers too. Its low, mounding habit makes this hardy perennial a welcome addition to rockeries and the front of sunny borders. Height: 35cm (14"). Spread: 45cm (18").

 

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

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    • £12.99
    • Out of stock
    • 2 x 3 litre potted scabiosa plants

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    • £19.99
    • Out of stock

Delphinium 'Magic Fountains Mixed' (Large Plant)

Majestic spires of white, lilac and blue delphinium flowers in a blend of no less than seven shades! This compact dwarf variety has all the presence of its taller cousins without the need for staking. The perfect solution for adding colour and structure to cottage garden perennial borders, even in windy areas. You can even cut some of their regal blooms for a striking flower arrangement indoors. Height: 90cm (36"). Spread: 45cm (18").

 

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

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    • £9.99
    • Out of stock
    • 2 x 1 litre potted delphinium plants

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    • £14.99
    • Out of stock

Gaillardia x grandiflora 'Kobold' (Large Plant)

Blanket Flower, Gaillardia aristata 'Goblin'

An exceptionally long flowering hardy perennial, with flowers from June to September. Gaillaria x grandiflora 'Kobold' really stands out in the border too! When at their peak of flowering, these plants will be covered in flowers, so much so that you won't see the foliage! Gaillardia are at their happiest in poor, sandy or stony soils, which is excellent for garden problem areas, and will survive periods of drought. Blanket Flower plants are hardy, and will come back year after year, and are ideal for beginners. Height: 30cm (12"). Spread: 45cm (18").

 

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

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 2 x 1 litre potted gaillardia plants

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

Hesperis matronalis (Large Plant)

Sweet Rocket

Hesperis matronalis is at its best when grown in large drifts, leaving plenty to spare for early summer bouquets. Fragrant clusters of bloom, coloured pale lilac to purple, are produced from May to July. The richly scented flowers of Sweet Rocket are irresistible to pollinating insects, making this an excellent choice for both wildlife areas and the herbaceous border. Although Hesperis is a biennial or relatively short-lived perennial, it will happily seed about to create swathes of bloom that will perfume the air on warm summer evenings. Height: 90cm (36"). Spread: 45cm (18").,

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

 

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

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    • £9.99
    • Out of stock
    • 2 x 1 litre potted hesperis plants

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    • £14.99
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Potted Plant Collection

Acer, Canna, Lilac, Eryingium

Our potted plant collection has something for almost every spot in the garden. Colourful Acers will brighten dappled shady spots with their vibrant autumn colours, while the Canna will bring an exotic feel to damp borders and pond edges. Eryingium is perfect for filling a gap in a sunny border. These quality plants are all supplied in pots ready to be planted out now. (Canna's are best grown on in frost free conditions over winter before planting out in spring).

  • Collection includes:
  • Canna 'Tropicanna Gold' - Luxuriant large leaves streaked with gold make a magnificent feature even before the tangering coloured flowers appear.
  • Syringa 'Dwarf Pink' - From early summer, a profusion of frothy pink blooms will smother this pretty dwarf lilac.
  • Acer palamatum 'Osakazuki Seedling' - This striking Japanese Maple is well regarded for its intense autumn colours.
  • Acer palmatum 'Atropurpureum' - A classic Japanese Maple producing gorgeous, purple-red foliage that colours to brilliant, fiery red in autumn.
  • Eryngium 'Neptune's Gold' - This unique specimen still retains the iconic blue flower tones of Eryngium, but also takes on a stunning golden sheen.
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    • 5 potted plants - 1 of each variety

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    • £50.00
    • Out of stock

Rudbeckia hirta 'Prairie Sun' (Garden Ready)

Coneflower, Black-eyed Susan

 Customer Rating
  • 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.

An impressive debut for beds and borders, this unique new plant was awarded a Fleuroselect Gold Medal. The unusual blooms with central green cones and bright orange petals radiating back to lemon yellow, make dazzling cut flowers.

 

Garden ready special offer
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    • 30 rudbeckia garden ready plants

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    • £14.99
    • Out of stock

Rudbeckia hirta 'Cherokee Sunset' (Garden Ready)

Coneflower, Black-eyed Susan

  • 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
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    • 30 rudbeckia garden ready plants

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    • £14.99
    • Out of stock

Rudbeckia Collection (Garden Ready)

Coneflower, Black-eyed Susan

  • Enjoy the hot colours of rudbeckia, even when it's cool in your garden!
A Collection of the finest Rudbeckia plants around, we've put together our three best varieties in one collection, not only that, they are all in our Garden Ready range so we've done all the hard work for you! With 90 plants - 30 each of Rudbeckia 'Cherokee Sunset', 'Cherry Brandy' and 'Prarie Sun' - your garden will be awash with a spectacular display of coneflowers from midsummer through to late autumn. Ideal for bees and just as good cut and taken indoors, these fantastic plants are a surefire hit this year! Height: 90cm (37"). Spread: 45cm (18").
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    • 90 rudbeckia garden ready plants - 30 of each variety

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    • £44.97 £35.00
    • Out of stock