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 649 products.
 

Peony 'Coral Sunset' (Large Plant)

Paeonia lactiflora, Herbaceous Peony

Herbaceous Peonies will last a lifetime in your garden; giving late spring displays of show-stopping, ruffled blooms each year for the minimum of effort! Plant them into the middle of herbaceous borders, where they will add structure and of course, rich colours.

Peony ‘Coral Sunset’ is especially recommended for its bowl-shaped blooms, which open coral pink, changing slowly to apricot and soft yellow. Imagine all these colours on one plant at the same time! Flowering in May, border Peonies are the perfect companions for Tulips! ‘Coral Sunset’ is a gold medal winner with the American Peony Society. Height: 80cm (31"). Spread: 55cm (21").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 3.5 litre potted peony plant

    • Despatch: By end of April 2016
    •  
    • £14.99
    • 2 x 3.5 litre potted peony plants

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

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").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted aster plants

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

Pulmonaria 'Sissinghurst White' (Large Plant)

Pulmonaria officinalis, Lungwort

Despite its unattractive common name of Lungwort, Pulmonaria is a very pretty hardy perennial for ground cover in shady corners, or beneath trees and shrubs. The foliage of Pulmonaria 'Sissinghurst White' is felted, and mottled in white, and accompanied by striking white flowers throughout the summer. Bees love the nectar-rich blooms of Pulmonaria, and this variety is such a reliable plant that it has been awarded an RHS Award of Garden Merit. Excellent for cottage gardens and woodland plantings. Height: 30cm (12"). Spread: 45cm (18").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted pulmonaria plants

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

Vinca major

Greater Periwinkle

Periwinkle is one of the toughest plants money can buy, producing plants that flower relentlessly throughout the summer. Periwinkle is a vigorous, low growing shrub, which thrives in almost any garden position, from full sun to the darkest, shady corners.

The ground-covering stems of Vinca major provide evergreen, dark green foliage that can help to beat the weeds, with inky blue flowers from April to September! Vinca are perfect for filling those tricky areas of the garden where little else grows. Height: 45cm (18") Spread: 75cm (30").

More info
    • 1 x 9cm potted vinca major plant

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 9cm potted vinca major plants

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

Hosta 'Fragrant Blue' (Large Plant)

Plantain Lily

This is a particularly eye-catching variety with chalky-blue foliage that retains its colour throughout the season. From July to August, the delicately scented, mauve pink flowers offer the perfect complement to the heart shaped foliage. In moist soils, this low growing hardy perennial forms dense ground cover. Hosta 'Fragrant Blue' is perfect for the front of borders, woodland planting schemes, or in the damp soil at the edge of ponds. Height: 50cm (20"). Spread: 100cm (39").

 

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

    • Despatch: By end of July 2016
    •  
    • £13.99
    • 2 x 2 litre potted hosta plants

    • Despatch: By end of July 2016
    •  
    • £21.99

Eryngium 'Neptune's Gold'

Sea Holly

The plant everyone's talking about! Eryingium 'Neptune's Gold' is the kind of breeding breakthrough that doesn't come along every day; a true colour break - the world's first golden Sea Holly! Selected in Wales from a batch of seedlings, this unique specimen still retains the iconic blue flower tones of Eryngium, but also takes on a stunning golden sheen - just like Neptune's crown! This superb perennial was Voted Best New Product at the recent Grower of the Year awards 2015. Height: 50cm (20"). Spread: 40cm (16").
More info
    • 1 x 9cm potted eryngium plant

    • Despatch: By end of August 2016
    •  
    • £12.99
    • 2 x 9cm potted eryngium plants

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

Viola sororia 'Freckles' (Large Plant)

Violet

Quite unlike any other variety, Viola sororia 'Freckles' bears violet-purple, speckled flowers from spring through to summer. The unusual blooms are carried above neat clumps of heart shaped, deep-green foliage. This memorable Violet will self-seed freely, dotting its offspring around the garden to provide welcome surprises the following spring! Perfect for growing in containers, rockeries or planted into crevices between paving. Height: 10cm (4"). Spread: 20cm (8").,

Culinary note: Some parts of these flowers are edible. The crystallised petals are great decorations for cakes and cookies, or they can be added straight to green salads for an injection of colour. For more details about edible flowers click here.

 

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

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

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

Primrose 'Belarina Doubles Collection'

Primula

Say 'goodbye' to the winter blues with these little beauties! Primrose 'Belarina Doubles Collection' will cheer up your garden from spring through to early summer with their vibrant colour, delicate fragrance and evergreen rosettes of foliage. With exceptional hardiness, down to -25C (13F), these incredible perennials will come back year after year, no matter how cold the winter is! Like miniature roses, these double-flowered primroses look fabulous wherever you plant them, in pots, containers, beds or baskets, in sun or semi shade - and unlike other primroses they won't need dead-heading! In this collection you will receive the following varieties: 'Nectarine', 'Amethyst Ice' and 'Pink Ice' Height: 15cm (6"). Spread: 20cm (8").

Culinary note: Some parts of these flowers are edible. Try the sweet tasting petals on top of salads or even pancakes, crystallise them for use as cake decorations too. For more details about edible flowers click here.

More info
    • 3 primrose jumbo plug plants

    • Despatch: By end of June 2016
    •  
    • £12.99
    • 6 primrose jumbo plug plants

    • Despatch: By end of June 2016
    • SAVE *£8.99  
    • £25.98 £16.99
    • 9 primrose jumbo plug plants

    • Despatch: By end of June 2016
    • SAVE *£18.98  
    • £38.97 £19.99

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
More info
    • 1 x 1 litre potted gaillardia plant

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

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

Lupin 'The Governor' (Large Plant)

Lupinus

Add a modern twist to your traditional planting schemes with the bicolour purple and white blooms of Lupin 'The Governor'. This tough, robust perennial produces its splendid, tall flower spikes from early summer onwards; each spire packed with pretty pea-like flowers. This cottage garden favourite that is superb for adding architectural stature to borders and woodland planting schemes. Height: 90cm (35"). Spread: 60cm (24").

 

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

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

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

Phlox douglasii 'Red Admiral' (Large Plant)

Moss Phlox

Phlox 'Red Admiral' is perfect for rockeries, the front of border or patio containers, and looks fantastic alongside spring bulbs. Also known as the Moss Phlox, this hardy perennial creates a low cushion of weed-suppressing foliage and, in spring, luminous displays of red flowers. Plants are vigorous, disease resistant, and stay compact, yet full of bloom! Phlox 'Red Admiral' also holds an RHS Award of Garden Merit. Height: 15cm (6"). Spread: 30cm (12").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted phlox plants

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

Arabis caucasica 'Pixie Cream' (Large Plant)

Arabis alpina subsp. caucasica, Rock Cress

Arabis is an easy to grow evergreen alpine plant for rockeries, the front of borders, scree gardens or large troughs on the patio. Arabis is unfussy and ideal for beginners, and will flower quickly after planting.

Arabis is a spring flowering, cushion-like perennial, which is excellent for growing spring bulbs through. Arabis flowers consistently from March to April, giving a weed-suppressing display of creamy-white flowers. Bees find Arabis is an important source of sweet nectar too. Height: 10cm (4"). Spread: 25cm (10").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted arabis plants

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