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 18 products.
 

Agapanthus africanus (Large Plant)

Agapanthus are spectacular border plants, which look exotic, but are fully hardy in the UK, and will last for many years in the right position. The strap-like leaves create a robust, space-filling clump in the border, and play host to 80cm (31") stems topped with deep blue, trumpet-shaped blooms in late summer.

Agapanthus is evergreen and will excel in Mediterranean-style plantings. Plants will appreciate a sheltered corner, and can be grown in the border or patio containers. The late summer flower displays of the African Lily are a sight to behold. Height: 1m (39"). Spread: 50cm (19").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 12cm potted agapanthus plant

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 2 x 12cm potted agapanthus plants

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

Heuchera 'Obsidian' (Large Plant)

This striking Coral Flower makes a bold statement. Fine sprays of creamy white flowers stand out against the glossy, deep maroon-black foliage. The nectar rich flowers of Heuchera 'Obsidian' attract pollinating insects and bring a light, airy feel to cut flower arrangements. This hardy evergreen perennial retains its elegant looks all year round, making it particularly useful for ground cover when planted en-masse. Perfect for individual patio pots or creating a sophisticated 'Black-tie' look in borders. Height: 45cm (18"). Spread: 30cm (12").

 

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

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 2 x 1 litre potted heuchera plants

    • Despatch: By end of August 2016
    •  
    • £17.99

Salvia nemorosa 'Marcus' (Large Plant)

Salvia are effortless, hardy plants for mixed borders. Salvia nemorosa 'Marcus' is a particularly special selection, with deep indigo flower spikes above clumps of aromatic foliage, the blooms coming in such density that they create a solid block of colour.

Salvia plants are deer resistant, rabbit resistant, and will attract bees and butterflies to your garden. Salvia 'Marcus' is short, neat and will make a strong feature towards the front of cottage garden borders and wildlife gardens. Trimming the plants in midsummer will encourage even more flowers! Height: 45cm (18"). Spread: 45cm (18").

 

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

    • Despatch:
    •  
    • £12.99
    • Out of stock
    • 2 x 1 litre potted salvia plants

    • Despatch:
    •  
    • £19.99
    • Out of stock

Coreopsis grandiflora 'Presto'

Tickseed

 Customer Rating
Coreopsis 'Presto' is so long-flowering and colourful that you can mix it up with summer bedding annuals to achieve a truly amazing, long lasting display. Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long. This versatile tickseed plant will grow almost anywhere, even in dry soil! Height and spread: 45cm (18").
More info
    • 6 coreopsis plug plants

    • Despatch: By end of August 2016
    •  
    • £5.99
    • 72 coreopsis plug plants

    • Despatch: By end of August 2016
    • Double up 36 to 72 for £5 extra  
    • £21.98 £15.99

Heuchera 'Berry Smoothie' (Large Plant)

Coral Flower, Coral Bells

Claret red veins pattern the pink foliage of Heuchera 'Berry Smoothie', which slowly ages to a deep burgundy by autumn. This new introduction is another eye-catching variety of this popular evergreen perennial. The creamy white flowers add extra interest in summer and prove particularly attractive to pollinating insects. A lovely choice for providing year round interest in patio containers and borders. Height: 45cm (18"). Spread: 50cm (20").

 

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

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

    • Despatch: By end of September 2016
    •  
    • £17.99

Dodecatheon meadia

  • Perfect for shade
  • Unusual 'cyclamen' blooms
  • Returns every spring

This early riser delights the spring garden with umbrellas of hanging reflexed flowers, just like cyclamen. The fresh white petals add a flash to shady spots, where the plants with thrive in the cool conditions. Deciduous foliage rosettes fade by midsummer, returning each spring before a flush of tall upright flower stems. This is the perfect spring perennial for anyone looking to lift shady areas of the garden. Height and Spread 45cm (18").

More info
    • 3 x 9cm potted dodecatheon plants

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 6 x 9cm potted dodecatheon plants

    • Despatch: By end of September 2016
    • SAVE* £4.99  
    • £24.99

Hosta 'Wide Brim' (Large Plant)

Plantain Lily

A well known variety that holds an RHS AGM for its garden performance. Hosta 'Wide brim' has heavily puckered, variegated foliage with deep green centres and pale gold margins. Lilac blue, funnel shaped flowers appear on tall stems throughout July. This clump forming perennial has an attractive mounding habit that creates a dense, rounded plant over time. A popular choice for a shaded position. Height: 45cm (18"). 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 August 2016
    •  
    • £13.99
    • 2 x 2 litre potted hosta plants

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

Coreopsis grandiflora (Large Plant)

Tickseed

This reliable, easy to grow perennial produces sunshine yellow blooms with serrated margins. Coreopsis flowers are always popular with bees and butterflies and make excellent cut flowers too. Flowering almost continually throughout summer and well into autumn, this versatile tickseed plant will grow almost anywhere, even in dry soil! Height and spread: 45cm (18").

 

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

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 2 x 1 litre potted coreopsis plants

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

Agapanthus africanus 'Albus' (Large Plant)

African Lily

Exotic, hardy plants with globes made up of many small, trumpet-like blooms in pure white, coming up from robust, grassy foliage. Agapanthus africanus 'Albus' makes an outstanding border perennial for a sunny position in the garden.

African Lilies also make attractive patio container plants; especially in aged terracotta containers. They are easy maintenance plants, and only need re-potting every few years. For something new, try cutting a few blooms of your African Lilies and display them in a vase indoors. Height: 1m (39"). Spread: 50cm (19").

 

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

    • Despatch: By end of August 2016
    •  
    • £10.99
    • 2 x 1 litre potted agapanthus plants

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

Wallflower 'Variegatum' (Large Plant)

Erysimum linifolium, Cheiranthus

Perennial Wallflowers are essential for low-maintenance gardens, and they will flower twice a year, once during winter/spring, then again towards the end of the summer.

This variegated Wallflower produces the mauve, colour-changing flowers, set against evergreen cream-lined foliage. Grow Wallflower 'Variegatum' in borders, rockeries or mix with bedding plants for attractive, spring-flowering patio pots and windowboxes. Versatile and quite undemanding, this short-lived perennial is tough, will grow in the poorest of soils and is drought tolerant once established. Height and spread: 45cm (18").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1.5 litre potted wallflower plant

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 2 x 1.5 litre potted wallflower plants

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

Hellebore Collection

Grow one of the UK's favourite winter-flowering plants; each flower bursting with glorious colour; easy to grow and fully hardy! This Hellebore Collection produces intriguing colours, patterns, flecks and ruffles which are a sheer delight during the cold months of winter and early spring. Their leathery palmate foliage has an evergreen presence all year round. Plants are vigorous, low-maintenance and long-lasting in sunny or difficult shady spots, representing excellent value for money. Height and spread: 45cm (18").


  • Collection comprises 5 plants each of:
  • Hellebore 'Hybridizers Singles' - Elegant, single-flowered Hellebores from our hand-pollinated breeding program, with a whole range of patterns and colours including whites, creams, pinks, greens, yellows, purples and black.
  • Hellebore 'Washfield Doubles' - Breathtaking, double-flowered Hellebores from the 'Washfield' collection that are bred to perfection. These delightful doubles come in a wide colour rangeincluding yellows, greens, blacks, reds, apricots and many other shades.

Plants are taken from selection, and we are unable to label colours upon despatch.

More info
    • 10 hellebore jumbo plug plants - 5 of each variety

    • Despatch: By end of August 2016
    •  
    • £18.99

Hosta 'Carnival' (Large Plant)

Plantain Lily

Hosta 'Carnival' sports dark grey-green foliage with wide pale gold margins and a rugged, furrowed texture. From June to July, stems of pale lavender flowers rise above the foliage. In time, this attractive hardy perennial will form a large spreading clump that looks superb at the front of a shaded border. Unlike some variegated forms, Hosta 'Carnival' is also sun tolerant. Height: 45cm (18"). 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 August 2016
    •  
    • £13.99
    • 2 x 2 litre potted hosta plants

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