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 661 products.
 

Phlox 'Bavaria'

Creeping Phlox are useful for dry, sunny spots and parched ground where other plants just won't grow! Once established, Phlox 'Bavaria' will thrive in the driest of soils, producing an impenetrable mat of fragrant flowers, suppressing weeds and resisting drought! The detailed eye on each gleaming white flower sets this stunning, evergreen drought tolerant perennial apart from the crowd. Height: 15cm (6"). Spread: 50cm (20").
More info
    • 5 phlox jumbo plug plants

    • Despatch: By end of October 2016
    •  
    • £9.99
    • 10 phlox jumbo plug plants

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

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 October 2016
    •  
    • £5.99

Wallflower 'Dwarf Scented Mixed'

Erysimum, Cheiranthus

Sometimes the old methods are the best, and that's exactly why we've added good, old fashioned bareroot wallflower plants to our range. Wallflower 'Dwarf scented Mixed' can be planted straight out into beds, containers and borders to create a fantastic tapestry of scented colour in the following spring. Tough, compact and reliable - this short lived perennial is tough enough to cope in even the poorest of soils. Height: 40cm (16"). Spread: 30cm (12"). More info
    • 20 bare root wallflower plants

    • Despatch: By end of October 2016
    •  
    • £7.99
    • 40 bare root wallflower plants

    • Despatch: By end of October 2016
    •  
    • £12.99

Astilbe x arendsii 'Look at Me'

False Goatsbeard

Turn any dark, damp corner of the garden into a focal point with this stunning Astilbe. The bubble-gum pink flower plumes and vivid ruby-red stems of Astilbe 'Look At me' virtually shout for your attention. This easy-grow perennial will thrive in soil too wet for many garden plants, but you don't have to tuck it out of site. This star perennial is also a top performer in patio pots when kept shaded and well watered. Voted Best New Plant when launched to the industry at the 2013 European Plantarium trade fair - we now have stock to meet consumer demand for this sought after perennial plant. Height: 45cm (18"). Spread: 50cm (20"). More info
    • 3 bare root astilbe plants

    • Despatch: By end of November 2016
    •  
    • £9.99
    • 6 bare root astilbe plants

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

Dianthus barbatus 'Mixed' (Garden Ready)

Sweet William

  • 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.


Enjoy the sweet clove like fragrance of this cottage garden favourite with the minimum of effort. This traditional mix of Sweet Williams combines a fabulous range of pinks, reds and white including solid shades and bicolours for a real tapestry of colour. Dianthus barbartus 'Mixed' carries its large clusters of flowers upon short, compact plants that make superb bedding. Often grown as a biennial, this short lived perennial is ideal for beds and borders. Height: 15cm (6"). 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.

 

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

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

Polemonium reptans 'Stairway to Heaven' (Large Plant)

Jacobs Ladder

An attractive cultivar of a cottage garden favourite. Clumps of delicate variegated foliage play host to stems of pretty light blue flowers in April and May. The cream edged leaves of Polemonium reptans 'Stairway to Heaven' are heat tolerant and develop a lovely pink tinge when grown in full sun. Jacobs Ladder is a versatile hardy perennial that needs little maintenance and makes a pleasing companion for Hostas in shadier positions. Height: 40cm (16"). Spread: 45cm (18").

 

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

    • Despatch: Within 28 days
    •  
    • £7.99
    • 1 x 2 litre potted polemonium plant

    • Despatch: Within 28 days
    •  
    • £12.99
    • 2 x 1 litre potted polemonium plants

    • Despatch: Within 28 days
    •  
    • £12.99
    • 2 x 2 litre potted polemonium plants

    • Despatch: Within 28 days
    •  
    • £19.99

Chrysanthemum vulgare May Queen (Large Plant)

 

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

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1 litre potted chrysanthemum plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Polyanthus 'Most Scented Mixed' (Garden Ready)

Primula

  • 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.

We've sniffed all the polyanthus we could find to be able to make up this exclusive mix for you! Each fresh colour has a lovely, strong fragrance, to bring you a true scent of spring. From late winter, these vigorous perennials produce plenty of flowers on short, stocky stems, above neat rosettes of lush foliage. Fill all your pots and borders with Polyanthus 'Most Scented Mix' for a riot of scent and colour even on the dreariest winter days! Height and spread: 25cm (10").

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.

 

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

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

Agapanthus 'Twister'

African Blue Lily

  • Stunning Bicolour flowers
  • Perfect for striking patio displays
  • Mid to Late Summer Flowering
Here's a plant that will stand out from the crowd in your garden - the first ever deciduous bicolour Agapanthus. This African lily is robust, and truly hardy in the UK meaning it's perfect in the garden border as well as in a patio container. The flowers of Agapanthus 'Twister' are absolutely glorious, with crystal white flutes turning inky blue at the tips. The huge globes of colour appear from mid to late summer, hosted on strong, sturdy stems that need no staking. Height: 60cm (24"). Spread: 50cm (20").

Why not add a patio pot to your order? - perfect for planting up your Agapanthus plants!
More info
    • 1 x 9cm potted agapanthus plant

    • Despatch:
    •  
    • £13.99
    • Out of stock
    • 2 x 9cm potted agapanthus plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

Delphinium 'Pacific Giants'

 Customer Rating
A distinguished delphinium producing strong spikes of semi-double blooms in a dreamy blend of pink, lilac, purple, violet-blue, sky-blue and white. Delphinium 'Pacific Giants' are excellent for cutting and add structure and presence to the back of cottage garden perennial borders. Height: 150cm (60"). Spread: 75cm (30").
More info
    • 6 delphinium plug plants

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

Viola Sorbet 'XP T&M Mixed' (Garden Ready)

Pansy

  • 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.

Create a kaleidoscope of springtime colour with Viola 'Sorbet XP T&M'. This uniform mix is prolific and free flowering with a neat, uniform habit that is perfectly suited to hanging baskets, window boxes and containers. Height: 20cm (8"). Spread: 23cm (9").

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.

 

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

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

Hollyhock 'Nigra' (Large Plant)

Alcea rosea

Superbly dramatic; the tall spires of Hollyhock 'Nigra' bear dark maroon-black flowers with pale contrasting eyes. This impressive variety of an old garden favourite is sure to draw attention for its stature and colour. Try growing it alongside paler varieties for a really striking contrast. These hardy perennials make a beautiful cut flower for a vase indoors too. Height: 200cm (79"). Spread: 60cm (24").,

Culinary note: try crystallising the flowers for a tasty cake decoration, or use them to make a delicately flavoured syrup to use with puddings. 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 hollyhock plant

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

    • Despatch: Within 28 days
    •  
    • £14.99