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 10 products.
 

Freesia 'Premium Collection'

Fabulous double Freesia flowers packed with that unmistakeable fresh fragrance! Freesia 'Premium Collection' combines some of the largest flowered varieties in a rainbow of summery colours. Grow Freesias in patio containers, sheltered borders and greenhouses for a perfumed display that will really tantalize the senses. Their strong arching stems make them perfect for adding to home-grown bouquets too! Height: 35cm (14"). Spread: 15cm (6"). More info
    • 20 freesia corms

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 40 freesia corms

    • Despatch: By end of June 2016
    • SAVE *£4.99  
    • £19.98 £14.99

Cyclamen hederifolium (Large Plant)

Cyclamen neapolitanium, Ivy-leaved Cyclamen, Sowbread

A delightful little plant producing delicate pink flowers with reflexed petals in the autumn. Often emerging after the flowers, the heart-shaped deep green leaves are patterned with silver, creating a striking marbled effect. Cyclamen hederifolium is a superb ground-cover plant in rock gardens and woodland gardens where it will self-seed freely to create carpets of foliage and flowers from autumn to spring, before the foliage dies back in summer. Height: 10cm (4"). Spread: 15cm (6").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted cyclamen plants

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

Primrose 'Elizabeth'

Primula

  • A different display every day!
  • Colour-Changing blooms
  • Watch the frills unfurl

A primrose with a difference. You’ll be amazed at the colour changing blooms of spring-flowering Primrose ‘Elizabeth’, each bloom looks different day by day as they work through a myriad of yellow and pink shades. It’s a shape changer too! Young blooms start our frilly, with petals straightening out as they mature. Looks lovely in spring table top planters and adds a touch of elegance to spring bedding displays in the border. Height: 20cm (8"). Spread: 15cm (6").
More info
    • 24 primrose plug plants

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 48 primrose plug plants

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

Rose Lily Grass

Rhodohypoxis

Dainty, jasmine-like flowers in two shades of pink erupt in profusion above short clumps of lance-shaped foliage in late spring, followed by flushes of flowers throughout the summer. Giving a long-lasting display throughout the summer months, these starry gems also have a delicate sweet fragrance. Each Rose Lily Grass plug plant contains more than one bulblet for prolific flowering in borders, rock gardens and containers. Although fully hardy, Rhodohypoxis will need protection from winter wet. Height and spread: 15cm (6"). More info
    • 1 Rose Lily Grass jumbo plug plant

    • Despatch: By end of June 2016
    •  
    • £14.99
    • 3 Rose Lily Grass jumbo plug plants

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

Gypsophila cerastioides (Large Plant)

Mouse-ear gypsophila

A small type of Gypsophila which is drought tolerant, tough and produces endless supplies of white flowers, which are loved by butterflies.

The Mouse Eared Gypsophila is good for alpine gardens, rockeries, patio containers, troughs or for growing in gaps in walls and paving. The tufted, mounding plants produce flowers from spring to summer. Height: 5cm (2"). Spread: 15cm (6").

 

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

    • Despatch: By end of June 2016
    •  
    • £9.99
    • 2 x 1 litre potted gypsophila plants

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

Poppy 'Ladybird' (Large Plant)

Papaver commutatum, Causican Scarlet Poppy

Hardy annual Poppy 'Ladybird' was developed from a species introduced from Russia in 1876 by our founder, William Thompson - and is still as popular as ever! Brilliant scarlet red petals are set off beautifully by the contrasting black spots at the base of each petal. Although each bloom last only a few days, more fat, hairy buds are constantly rising from among the clumps of finely cut foliage. This fabulous Caucasian Scarlet Poppy is so easy to grow and holds an RHS AGM for its superb garden performance. Height: 45cm (18"). Spread: 15cm (6").

 

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

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

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

Allium 'Gladiator' (Large Plant)

Ornamental Onion

Hundreds of starry purple blooms with delicate silvery tips form these incredible allium flower heads. The magnificent, spherical blooms of Allium 'Gladiator' are up to 15cm (6") across! Flowering only once in a season, the blooms are followed by skeletal seedheads for a spectacular autumn display. Undemanding and easy to grow, these purple alliums are guaranteed to add the 'wow' factor to borders and cut flower arrangements. Height: 120cm (48"). Spread: 15cm (6").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

Allium 'Globemaster' (Large Plant)

Ornamental Onion

Hundreds of starry lilac-purple blooms form the incredible flower heads of this RHS AGM variety. The magnificent, spherical blooms of Allium 'Globemaster' are up to 15cm (6") across! Flowering only once in a season, the blooms are followed by skeletal seedheads for a spectacular autumn display. Undemanding and easy to grow, these purple alliums are guaranteed to add the 'wow' factor to borders and cut flower arrangements. Height: 80cm (31"). Spread: 15cm (6").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 3 litre potted allium plant

    • Despatch: By end of July 2016
    •  
    • £12.99
    • 2 x 3 litre potted allium plants

    • Despatch: By end of July 2016
    •  
    • £22.99

Allium stipitatum 'Mount Everest' (Large Plant)

Ornamental Onion

Allium bulbs are very easy to grow, and will look after themselves in the garden. Allium 'Mount Everest' produces globes of more than 50 star-shaped blooms during June, just after the spring bulbs, but before the summer bedding comes into flower.

Allium are ideal for dry gardens, and there is no need to lift the bulbs at the end of the season, as they are fully hardy. You will be amazed at how beautiful these flowers can be, for the minimum of effort! Height: 1.2m (3.9'). Spread: 15cm (6").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 3 litre potted allium plant

    • Despatch: By end of July 2016
    •  
    • £10.99
    • 2 x 3 litre potted allium plants

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

Erodium × variabile 'Roseum' (Large Plant)

Erodium reichardii 'Roseum', Heron's Bill, Stork's Bill

This hardy little alpine plant is perfect for filling crevices in walls, patios and rockeries. Spreading cushions of scalloped, grey-green foliage host a profusion of pink flowers with darker veining, reminiscent of tiny Geraniums. Erodium × variabile 'Roseum' has a low spreading habit which is particularly effective when planted in groups and allowed to knit together. This particular variety of Stork’s Bill holds an RHS AGM for its garden performance. Height: 8cm (3"). Spread: 15cm (6").

 

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

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

    • Despatch:
    •  
    • £14.99
    • Out of stock