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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 655 products.
 

Delphinium 'Rising Stars Mixed'

  • Best in class for delphiniums
We've given our customers the chance to get their hands on some very new, very different delphiniums from the world-famous 'New Zealand Hybrids' programme. There are far too many hybrids produced for our supplier to sell, so we've grouped our favourites into an exclusive 'Breeders Mixture', aptly named 'Rising Stars'! This exciting mix of delphinium flowers blends picotees, pastels, singles, doubles and frosted hybrids for a spectacular, towering display. You can even cut some blooms for a striking flower arrangement indoors. Height: 120cm (47"). Spread: 75cm (30").

SPECIAL OFFER - To get your delphinium plants at the reduced price, simply add your chosen pack size to your order and use order code TNS470Z in your shopping basket.

Please note that this offer is limited to one pack per order at this special price. This offer cannot be used in conjunction with any other offer or with promotional vouchers. Hurry, offer ends midnight Friday 1st July or while stock lasts.

More info
    • 5 delphinium jumbo plug plants

    • Despatch: By end of August 2016
    • £2.99 with order code TNS470Z  
    • £14.99
    • 10 delphinium jumbo plug plants

    • Despatch: By end of August 2016
    • £3.99 with order code TNS470Z  
    • £19.99

Erigeron glaucus 'Sea Breeze' (Large Plant)

Fleabane

A low-growing, carpeting plant for coastal locations, or any difficult, exposed position in the garden. The lilac blooms come easily, and the Beach Aster or Fleabane as it is commonly known, looks great tumbling over a rock wall, or growing between cracks in paving.

Erigeron plants are tough and easy to establish, some may even refer to them as 'foolproof'. The Beach Aster is long-lived too, will flower right through the summer, and self-seed if you'd like it to! Height: 30cm (12"). Spread: 45cm (18").

 

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

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

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

Eryngium planum 'Blue Hobbit' (Large Plant)

Sea Holly, Blue Eryngo

Eryngium are handy little plants for the border, as they'll grow in many different types of soil, and the flower power of Eryngium 'Little Hobbit' is second to none!

Eryngium 'Blue Hobbit' is a unique, dwarf Eryngium, which can be grown in a patio pot. The 30cm (12") plants become top-heavy in midsummer, with sprays of nearly 100 inky-blue flowers. Height and Spread: 30cm (12").

 

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

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

    • Despatch: By end of July 2016
    • SAVE *£2.99  
    • £19.98 £16.99

Heuchera villosa 'Palace Purple' (Large Plant)

Heuchera sanguinea 'Palace Purple', Coral Flower, Coral Bells

Neat mounds of distinctive purple foliage make Heuchera 'Palace Purple' a particularly popular Coral Flower. The glossy, semi-evergreen leaves of this striking hardy perennial provide year round colour, forming drifts of ground cover and adding a bright splash to winter containers. The delicate summer sprays of pale pink flowers make dainty cut flowers and attract bees to their nectar rich blooms. Height and spread: 60cm (24").

 

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

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

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

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

Rudbeckia 'Summerina Collection'

Coneflower, Black-eyed Susan

  • T&M Exclusive
  • New perennial rudbeckia for borders

Rudbeckia 'Summerina' Collection is exclusive to Thompson & Morgan, a near impossible breeding breakthrough - the crossing of an annual rudbeckia and a perennial echinacea! The result: tough, hardy perennial rudbeckias that return year on year to offer the stronger and longer flowering habit of annual varieties. This three colour mix is ideal for extending the life of your summer border - the plants go on to provide much needed autumn colour right up to the first hard frosts. Height and spread: 60cm (24").

More info
    • 3 rudbeckia jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £17.99
    • 6 rudbeckia jumbo plug plants

    • Despatch: By end of September 2016
    • SAVE *£5.99  
    • £35.98 £29.99

Foxglove 'Illumination Collection'

Digitalis

Parentage from the little-known Isoplexis (Canary Island Foxglove) gives these exciting new Digitalis their fabulous tropical colouring. Being completely sterile Foxglove 'Illumination Duo' won't set seed, making them incredibly long flowering. Unlike most foxgloves which are generally biennial, these hardy semi-evergreen varieties are true perennials so you can enjoy them year after year. The exotic looking blooms are densely packed on sturdy stems, with many side branches, making a striking addition to summer borders. Height: 90cm (36"). Spread: 45cm (18").

  • Collection comprises:
  • Foxglove 'Illumination Pink' - Awarded 'Best New Plant' at the Chelsea Flower Show 2012.
  • Foxglove 'Ruby Slippers' - This beautiful Digitalis produces spires of open-mouthed blooms in a juicy shade of raspberry pink with contrasting apricot lips.
More info
    • 2 x 9cm potted foxglove plants - 1 of each colour

    • Despatch: By end of July 2016
    • SAVE *£9.99  
    • £29.98 £19.99

Dianthus 'Scents of Summer Pink Peony'

Pink, Carnation

  • T&M Exclusive
  • We've put the scent back into garden carnations!

Part of the 'Scents of Summer' series, Dianthus 'Pink Peony' is the pick of the bunch. The crested magenta blooms have a deep, rich fragrance, just like the old fashioned varieties, but with modern vigour and strong garden performance which continues throughout the season. Look forward to an abundance of strong stemmed blooms from this hardy garden pink, which make superb cut flowers. Perfect for edging pathways and borders or brightening up patio containers with long lasting colour. Height and 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 Postiplug plants

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 10 dianthus Postiplug plants

    • Despatch: By end of July 2016
    • SAVE *£7.99  
    • £25.98 £17.99

Phlox Collection (Creeping)

Phlox subulata, Moss Phlox

 Customer Rating
  • Fragrant ground cover
Groundcover needn't be dull! Carpet your garden in rich colour and keep the weeds at bay with our perennial creeping phlox collection. This hardy rockery plant has many uses – underplant trees, shrubs and tall perennials, soften path edging or cover awkward slopes and banks. If you're tired of your lawn, why not replace it with a sea of seasonal colour. This collection comes into its own in March to May, bridging the colour gap between winter and summer bedding. Height: 15cm (6"). Spread: 50cm (20")..
  • Collection comprises:
  • Phlox subulata 'Candy Stripes'
  • Phlox subulata 'Snowflake'
  • Phlox subulata 'Red Wings'
  • Phlox subulata 'Drummonds Pink'
  • Phlox subulata 'Emerald Cushion'
More info
    • 5 phlox Postiplug plants

    • Despatch: By end of August 2016
    •  
    • £13.99
    • 10 phlox Postiplug plants

    • Despatch: By end of August 2016
    • SAVE *£7.99  
    • £27.98 £19.99
    • 20 phlox Postiplug plants

    • Despatch: By end of August 2016
    • SAVE *£30.97  
    • £55.96 £24.99
    • 50 phlox Postiplug plants

    • Despatch: By end of June 2016
    • SAVE *£99.91  
    • £139.90 £39.99

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 July 2016
    • save £4  
    • £11.99 £7.99
    • 10 dianthus jumbo plug plants

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

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

Verbena bonariensis

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
    • 6 verbena plug plants

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

Heuchera 'Patchwork' Mix

Coral Flower, Coral Bells

 Customer Rating
Sprays of delicate, tiny flowers float on wiry stems above neat mounds of vibrant foliage. Prized for their colourful leaves, these versatile semi-evergreen perennials make excellent drifts of ground cover, adding a distinctive splash of colour to the front of borders, or even brightening winter containers. Their airy blooms attract bees and are also useful as cut flowers. Height and spread: 40cm (16").
More info
    • 3 heuchera Postiplugs

    • Despatch: By end of September 2016
    • + FREE £5 voucher  
    • £8.99
    • 5 heuchera Postiplug plants

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 6 heuchera Postiplugs

    • Despatch: By end of September 2016
    • + FREE £5 voucher  
    • £12.99
    • 10 heuchera Postiplug plants

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