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.
 

Echinacea 'Papallo Collection'

Instantly recognisable, Echinacea’s have always been a firm favourite for summertime perennial borders. The bright and cheerful colours of coneflowers not only look spectacular in drifts, they are also a great attraction for bees and butterflies, making them perfect for a wildlife garden too! Height 50cm (20").

Your Echinacea 'Papallo Collection' will be made of several varieties from those listed below and can be planted out or potted up immediately on delivery for strong establishment in the garden ahead of winter.

  • Echinacea purpurea ‘Papallo Compact White’ - purest white petals perfectly surround the central cone on this compact growing variety, ideal for beds and containers alike.
  • Echinacea purpurea ‘Papallo Compact Pink’ - The classic colour, deep pink blooms produced on compact plants that are perfect for growing in containers as well as flower beds and borders.
  • Echinacea purpurea ‘Papallo Semi-Double Pink’ - a gorgeous variety that combines the features of Echinacea but with a lovely semi double flower, the centres being deeper pink frills with surrounding paler, larger petals to accent them.
  • Echinacea purpurea ‘Papallo Semi-Double White’ - a really stunning variety; feathery outer petals of pristine white form a delicate frame for the masses of creamy-yellow central blooms that cover the central cone, an eye catching addition to any collection.
  • Echinacea purpurea ‘Papallo Classic Rose’ - Delicately pale pink petals and an almost golden central cone add a touch of elegance to your summer borders. A delight to behold as a cut flower too!

  • Varieties included may differ from those illustrated.

More info
    • 5 echinacea jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 10 echinacea jumbo plug plants

    • Despatch: By end of September 2016
    •  
    • £19.99
    • 20 echinacea jumbo plug plants

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

Monarda didyma 'Cranberry Lace' (Large Plant)

Bergamot

Bergamot are unusual-looking perennials that have aromatic foliage and whorls of spidery blooms made up of tubular petals. Monarda 'Cranberry Lace' is a compact, short Bergamot with bright pink, and a built-in resistance to powdery mildew problems.

Bergamot is perfect for cottage garden borders where it can quickly form dense, easy to grow clumps. Bergamot flowers are great for the wildlife garden, as they are loved by bees. Height: 90 cm (36"). Spread: 45cm (18").


Culinary note: Use the dried leaves to make Bergamot tea or use the sweet, spicy flavoured petals to enhance salads, jellies, rice or pasta dishes. 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 monarda plant

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

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

Daylily 'Stella in Red' (Large Plant)

Hemerocallis

They always say daylilies are un-killable, and we think that's quite accurate; plants are hardy, very tough, will grow in most positions, producing lily-like flowers. Daylily 'Stella in Red' has ruby-red, gently fragrant flowers, which last a day each, but are borne on compact, grassy plants all through the summer. Plant up Hemerocallis plants into mixed garden borders or large pots. Daylilies are ideal for beginners and smaller gardens, are rabbit resistant, and last many years. Height: 30cm (12") and Spread: 45cm (18").

Culinary note: Try day lily petals in salads, soups or cooked and served as a vegetable. 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 Daylily plant

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

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

Campanula lactiflora 'Dwarf Pink' (Large Plant)

The Milky Bellflower has long been a cottage garden favourite. This pretty cultivar bears a profusion of rose-pink, star shaped flowers from May to August which provide a valuable source of nectar for bees and other pollinators. Although not as small as its name might suggest, Campanula lactiflora 'Dwarf Pink' is certainly more compact than the rest of its species, maintaining a neat habit in garden borders. This hardy perennial is quick to flower and perfect for filling gaps in herbaceous borders. The blooms make an attractive cut flower too. Height: 90cm (35"). Spread: 45cm (18").

 

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

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

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

Campanula lactifolia Violet (Large Plant)

 

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

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

    • Despatch:
    •  
    • £14.99
    • Out of stock

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: By end of September 2016
    •  
    • £7.99
    • 1 x 3 litre potted polemonium plant

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

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 3 litre potted polemonium plants

    • Despatch:
    •  
    • £19.99

Hosta undulata var. undulata (Large Plant)

Hosta undulata var. undulata gives funnel shaped, lavender blue flowers on tall spikes, which are held above the neat, weatherproof clumps of foliage. The bright green leaves have a curious, twisted growth habit which gives them a fascinating appearance.

Hosta undulata var. undulata is an RHS AGM variety, which makes a fabulous addition to borders, woodland gardens and patio containers, producing the best colour in a shady position. Height: 100cm (39"). Spread: 45cm (18").

 

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

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

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

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 September 2016
    •  
    • £9.99
    • 2 x 1 litre potted erigeron plants

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

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 September 2016
    •  
    • £5.99

Agastache 'Summer Glow' (Large Plant)

This fantastic perennial is one of the best slug-proof plants for your garden. Slugs and snails dislike the felted, minty-fragranced foliage, so plants are left completely untouched.

Agastache are compact, evergreen plants, with colour-changing flowers, which are loved by bees and butterflies. Agastache plants are also very drought tolerant, and are can be grown in the border or patio pots. Height: 60cm (24"). Spread: 45cm (18").


Culinary note: Add both flowers and leaves to cakes or whipping cream for a hint of anise flavour. 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 agastache plant

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

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

Penstemon 'Pensham Just Jayne' (Large Plant)

If pink is your colour then you'll love Penstemon 'Pensham Just Jayne'. The tubular rose-pink flowers with magenta throats are borne all summer long and continue well into autumn when most perennials are tiring. Penstemons have extreme staying power and this tall variety makes a useful focal point in fading herbaceous borders. Height: 90cm (36"). Spread: 45cm (18").

 

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

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

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

Meconopsis betonicifolia 'Blue'

Himalayan Poppy

Meconopsis betonicifolia - a stunning blue Himilayan Poppy that will certainly make an impact on its own, let alone as part of this collection. The large bowl shaped blooms will have a dramtic effect and are certainly worth a place in your garden. Height: 120cm (47"). Spread 45cm (18"). More info
    • 1 x 7cm potted meconopsis plant

    • Despatch: By end of November 2016
    •  
    • £11.99 £9.99