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 21 products.
 

Dianthus 'Perfumed Pinks' Collection

Carnation, Pink

Enjoy a garden filled with fragrance and colour this summer with this wonderful Perfumed Pinks Collection . Mounds of silver-green foliage produce an abundance of perfumed dianthus flowers. Perfect for borders and containers, or for cutting for a vase indoors. Height: 40cm (16"). Spread: 30cm (12"). Supplied as jumbo plugs.

  • Collection comprises:
  • Dianthus 'Cosmic Pink Swirl' - Pink and white petals with an almost shimmering effect.
  • Dianthus 'Cranmere Pool' - Palest pink petals with a touch of red deep within the ruffled centres.
  • Dianthus 'Doris' - Soft pastel pink blooms with a lovely fragrance.
  • Dianthus 'Letitia Wyatt'- Delicate baby pink blooms.
  • Dianthus 'Gran's Favourite' (x 5) - A popular and well known variety with pretty picotee edges.
More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of October 2016
    •  
    • £9.99
    • 10 dianthus postiplug plants

    • Despatch: By end of October 2016
    •  
    • £14.99
    • 20 dianthus postiplug plants

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

Helianthemum Collection

Rock Rose, Sun Rose

These tough little rock roses are hardy, drought tolerant and trouble-free, producing glorious colour from late spring to midsummer. If pruned after flowering, they'll even reward you with a second flush of blooms in late summer! The nectar-rich flowers, set against a backdrop of silvery, semi-evergreen foliage, are loved by bees and other insects. This helianthemum collection makes excellent groundcover or a versatile addition to rockeries or hot, dry borders. Height: 20cm (8"). Spread: 30cm (12").
  • Collection comprises the following varieties:
  • Helianthemum 'Ben Mohr' - Orange, saucer shaped flowers.
  • Helianthemum 'Pink Angel' - An abundance of delicate double, pink flowers.
  • Helianthemum 'The Bride' - A pretty, white rock rose with an RHS Award of Garden Merit.
  • Helianthemum 'Ben Fhada' - Bright, primrose yellow blooms with golden egg-yolk centres.
  • Helianthemum 'Peachy Keen' - New peach bloomed variety 'Peachy Keen' has an overwhelming amount of petals, further boosting the effect in your garden!
More info
    • 5 helianthemum jumbo plug plants - 1 of each variety

    • Despatch: By end of April 2017
    •  
    • £9.99
    • 10 helianthemum jumbo plug plants - 2 of each variety

    • Despatch: By end of April 2017
    •  
    • £14.99

Dianthus 'Gran's Favourite'

Carnation, Pink

This well loved RHS AGM variety is as popular as ever for its white blooms with raspberry picotee edges. The clove scented flowers of Dianthus 'Gran's Favourite' are produced in abundance above a carpet of silvery green foliage. With such a prolific flowering period there will be plenty of blooms to spare for a vase indoors. This super little Pink is perfectly hardy and a makes a lovely addition to the front of cottage garden borders. Height and spread: 40cm (16").


Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of October 2016
    • save £2  
    • £9.99 £7.99
    • 10 dianthus Postiplug plants

    • Despatch: By end of October 2016
    • SAVE £2  
    • £14.99 £12.99

Lavender 'Hidcote'

Lavandula angustifolia, English Lavender

With its compact habit and dark purple flower spikes, this must be one of the nation's best known varieties of English lavender. The fragrant stems of Lavandula 'Hidcote' are ideal for cutting or drying, and the nectar-rich flowers are particularly attractive to bees. Lavender makes an excellent low hedge or path edging where the perfume can be appreciated as you brush past the aromatic evergreen foliage. Height: 60cm (24"). Spread: 75cm (30").

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

More info
    • 6 lavander plug plants

    • Despatch:
    •  
    • £5.99
    • Out of stock

Dianthus 'Ever-blooming Mixed' (Hardy)

Carnation

Strong upright stems carry large ruffled blooms in a vibrant mix of red, orange, yellow and pink carnations. These hardy perennial dianthus are cottage garden essentials. The fragrant carnation flowers are excellent for cutting for a bright display indoors. Perfectly proportioned for the front of sunny borders where their mounds of silvery green foliage remain evergreen throughout the year. Height: 60cm (24"). Spread: 40cm (16").

 

Culinary note: Dianthus flowers are edible.

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 6 dianthus plug plants

    • Despatch: By end of October 2016
    •  
    • £5.99
    • 72 dianthus plug plants

    • Despatch: By end of October 2016
    • Double up 36 to 72 for £5 extra  
    • £15.99

Dianthus 'Crimson Rim'

Carnation

  • At last - a new carnation with a traditional fragrance

This stunning hardy Carnation bucks the modern trend for flashy flower colours at the expense of their fragrance. Dianthus 'Crimson Rim' combines elegant pristine white blooms with a stylish raspberry edge and a wonderful rich clove fragrance. This clump forming perennial is undemanding and well behaved making it perfect for the front of borders. And with a such a free flowering habit you'll have plenty of stems to spare for a vase indoors. Height: 40cm (16"). Spread: 30cm (12").


Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

 

More info
    • 5 dianthus jumbo plug plants

    • Despatch: By end of October 2016
    • save £4  
    • £11.99 £7.99
    • 10 dianthus jumbo plug plants

    • Despatch: By end of October 2016
    • save £5  
    • £17.99 £12.99
    • 20 dianthus jumbo plug plants

    • Despatch: By end of October 2016
    • SAVE £5  
    • £24.99 £19.99

Dianthus 'Doris'

Carnation, Pink

This well known RHS AGM variety is one of the longest flowering Pinks you'll find. An abundance of double pink flowers with deep pink centres are produced all summer long, above mats of silvery green foliage. With a rich, sweet fragrance, Dianthus 'Doris makes a delightful cut flower that will fill your home with fragrance. This compact hardy perennial is perfect for alpine gardens and rockeries or planted through the front of beds and borders. Height and spread: 25cm (10").


Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of October 2016
    • SAVE £2  
    • £9.99 £7.99
    • 10 dianthus Postiplug plants

    • Despatch: By end of October 2016
    • SAVE £2  
    • £14.99 £12.99

Achillea filipendulina 'Coronation Gold' (Large Plant)

Yarrow

One of the very best herbaceous perennials for a mixed border, Achillea is easy to grow and a low maintenance plant. 'Coronation Gold' is a popular variety, which has flat heads of golden-yellow flowers over a long summer period.

Achillea loves a hot, sunny border and will add colour to your summer garden for a minimum of effort. The flower heads are incredibly eye-catching and plants are quick to establish, filling a gap in the border. Height: 1m (39"). Spread: 50cm (20").

 

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

    • Despatch: Within 28 days
    •  
    • £9.99
    • 2 x 1 litre potted achillea plants

    • Despatch: Within 28 days
    •  
    • £16.99

Lamium maculatum 'Pink Pewter' (Large Plant)

Dead Nettle

Lamium maculatum 'Pink Pewter' is a tough and resilient hardy perennial, thriving in shade on almost any soil. This vigorous dead nettle will form a carpet of sparkling silver foliage with deep green margins. From April through to midsummer the clusters of salmon pink flowers provide a rich supply of nectar for pollinating insects. A first-class ground cover plant for a shaded spot - perfect for creeping through woodlands, wildlife gardens, rockeries or borders. Height: 10cm (8"). Spread: 60cm (24").

 

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

    • Despatch: Within 28 days
    •  
    • £7.99
    • 2 x 1 litre potted lamium plants

    • Despatch: Within 28 days
    •  
    • £12.99

Perovskia 'Blue Spire' (Large Plant)

Russian Sage

Perovskia 'Blue Spire' is an easy maintenance plant, which is particularly at home in a bright, sunny border. Plants of Russian Sage are drought resistant, and will establish quickly and easily, and are ideal for beginners and first time gardeners. They can also be grown in coastal areas quite successfully.

The foliage of Perovskia is silvery and aromatic, and plants will look fantastic when planted en masse. The blue flowers combine well, and are useful for colour later in the summer. Plants of Russian Sage are loved by bees and butterflies, and 'Blue Spire' also holds an RHS Award of Garden Merit. Height: 120cm (48"). Spread: 1m (39").

 

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

    • Despatch: Within 28 days
    •  
    • £10.99
    • 2 x 3.5 litre potted perovskia plants

    • Despatch: Within 28 days
    •  
    • £19.99

Cyclamen 'Miracle Mixed'

Sowbread

We've selected the very best cyclamen to brighten your garden this autumn - so when the weather is cool, your planting scheme doesn't have to be! The vibrant pink, purple and rose shades of 'Miracle Mixed' will brighten the dullest autumn days.


This strong colour mix is ideal for border and container displays and is the perfect choice for lifting the shade under trees and shrubs - adding a natural winter woodland feel to the garden. The silver and green foliage adds extra interest. To really enjoy the display why not add Cyclamen 'Miracle Mixed' to window boxes or hanging baskets, where you'll also get to appreciate the subtle sweet scent of these mini cyclamen plants. Height: 20cm (8in). Spread: 20cm (8in).

More info
    • 3 x 9cm potted cyclamen plants

    • Despatch: By end of October 2016
    •  
    • £9.99
    • 6 x 9cm potted cyclamen plants

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

Helianthemum Collection

Rock Rose, Sun Rose

These tough little rock roses are hardy, drought tolerant and trouble-free, producing glorious colour from late spring to midsummer. If pruned after flowering, they'll even reward you with a second flush of blooms in late summer! The nectar-rich flowers, set against a backdrop of silvery, semi-evergreen foliage, are loved by bees and other insects. This helianthemum collection makes excellent groundcover or a versatile addition to rockeries or hot, dry borders. Height: 20cm (8"). Spread: 30cm (12").
  • Collection comprises the following varieties:
  • Helianthemum 'Ben Mohr' - Orange, saucer shaped flowers.
  • Helianthemum 'Pink Angel' - An abundance of delicate double, pink flowers.
  • Helianthemum 'The Bride' - A pretty, white rock rose with an RHS Award of Garden Merit.
  • Helianthemum 'Ben Fhada' - Bright, primrose yellow blooms with golden egg-yolk centres.
More info
    • 4 helianthemum jumbo plug plants - 1 of each variety

    • Despatch: By end of April 2017
    •  
    • £11.99
    • 8 helianthemum jumbo plug plants - 2 of each variety

    • Despatch: By end of April 2017
    •  
    • £15.99