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. Use the selections in the left menu to select the right plants for your garden.



We have found 408 products.
 

Geranium himalayense 'Birch Double'

Geranium himalayense 'Plenum', Hardy Geranium, Cranesbill

Vigorous and versatile, this superb cranesbill tolerates almost any situation; even full shade. A mass of double purple-pink blooms stand above the delicately serrated foliage which turns to shades of burnt red and orange in autumn. Geranium himalayense 'Birch Double' will quickly blend with other herbaceous perennials to create colourful groundcover and looks equally attractive in herbaceous borders and shady woodland gardens. Height: 25cm (10”). Spread: 60cm (24”). More info
    • 1 bareroot plant

    • Despatch: By end of February 2015
    •  
    • £12.99

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 jumbo plug plants - 5 of each variety

    • Despatch: By end of February 2015
    •  
    • £18.99

Golden Lysimachia

Lysimachia punctata, Dotted Loosestrife

  • A towering, elegant plant for the border
Bring some sunshine to your borders with this resilient cottage-garden favourite. Neat clumps of tall, elegant stems with striking yellow flowers are borne from mid-summer through until early autumn. Golden Lysimachia is great for difficult clay soils and shadier parts of the garden, thriving in damp borders, bog gardens or at the margins of a pond. Grow dotted loosestrife in woodland gardens or informal areas for a burst of late summer colour! Height: 90cm (35"). Spread: 60cm (24").

SPECIAL OFFER - To get your plants at the reduced price, simply add your chosen pack size to your order and use order code TNS293Z 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 Thursday 20th November or whilst stock lasts. P&P charges will apply.

More info
    • 5 Postiplug plants

    • Despatch: By end of March 2015
    • £1.99 with order code TNS293Z  
    • £9.99
    • 10 Postiplug plants

    • Despatch: By end of March 2015
    • £2.99 with order code TNS293Z  
    • £14.99

Helianthemum Collection

Rock Rose, Sun Rose

These tough little rock roses are hardy, drought tolerant and trouble-free, producing glorious colour from late spring to midsummer. If pruned after flowering, they'll even reward you with a second flush of blooms in late summer! The nectar-rich flowers, set against a backdrop of silvery, semi-evergreen foliage, are loved by bees and other insects. This helianthemum collection makes excellent groundcover or a versatile addition to rockeries or hot, dry borders. Height: 20cm (8”). Spread: 30cm (12”).
  • Collection comprises the following varieties:
  • Helianthemum 'Ben Mohr' – Orange, saucer shaped flowers.
  • Helianthemum 'Pink Angel' – An abundance of delicate double, pink flowers.
  • Helianthemum 'The Bride' – A pretty, white rock rose with an RHS Award of Garden Merit.
  • Helianthemum 'Ben Fhada' – Bright, primrose yellow blooms with golden egg-yolk centres.
  • Helianthemum 'Fireball' – Fantastic double scarlet petals.
More info
    • 5 jumbo plug plants - 1 of each variety

    • Despatch: By end of March 2015
    •  
    • £14.99
    • 10 jumbo plug plants - 2 of each variety

    • Despatch: By end of April 2015
    •  
    • £19.99

Osteospermum Collection (Hardy)

African Daisy, Cape Daisy

 Customer Rating

Versatile and resilient, hardy Osteospermums will thrive in hot, dry, neglected conditions, yet remain some of longest-flowering plants in the garden! Expect vibrant summer colour and weed suppressing ground cover from these easy to grow, sun loving Cape Daisies. Height: 15cm (6"). Spread: 90cm (36").

  • Collection comprises:
  • Osteospermum 'Snow Pixie' - A perfect contrast to its purple-pink coloured cousins, sporting clean, white petals with a golden yellow eye.
  • Osteospermum 'Tresco Purple' - Bold pink daisy flowers open every morning to greet the sun.
  • Osteospermum jucundum var. compactum - Irrepressibly cheerful, bright pink daisy flowers smother carpets of low growing foliage.
More info
    • 9 jumbo plug plants - 3 of each variety

    • Despatch: By end of April 2015
    •  
    • £19.99

Mazus reptans

  • Try a new ground cover idea
This low growing, matt-forming perennial is perfect for filling gaps between stepping stones or at the front of sheltered borders and rockeries. The spreading foliage of Mazus reptans forms a dense carpet that is covered in pretty lilac-blue flowers with a yellow-spotted lower lip. This hardy, ground cover alpine has a long flowering period from late spring to July. Height: 5cm (2"). Spread: 30cm (12").
More info
    • 5 jumbo plug plants

    • Despatch: By end of March 2015
    •  
    • £14.99
    • 10 jumbo plug plants

    • Despatch: By end of March 2015
    • SAVE £9.99  
    • £29.98 £19.99

Geranium maderense

Giant Herb Robert, Madeira Cranesbill

  • RHS Award of Garden Merit
  • The palm tree geranium
Geranium maderense is a magnificent tender perennial. The Madeira Cranesbill is the largest of the Geranium species, and certainly one of the most impressive, reaching a height of 1.5m (4',9"). Although perennial, it often acts as a biennial, producing pretty magenta pink blooms in its second year. But you won't mind the wait - it will give you time to appreciate the exotic-looking, dissected, evergreen foliage that radiates from a stout central trunk. This spectacular RHS AGM species will need some winter protection so it is best grown in the conservatory or a large patio container which can be moved to a frost free position in winter. Height: 150cm (59"). Spread: 100cm (39").
More info
    • 1 x 12cm potted plant

    • Despatch: By end of April 2015
    •  
    • £19.99
    • 2 x 12cm potted plants

    • Despatch: By end of April 2015
    •  
    • £29.99

Gerbera 'Sweet Glow'

Barberton Daisy, Transvaal Daisy

  • New in 2014
  • World exclusive
  • Bigger and better winter hardy gerberas
  • Three seasons of stunning colour
Growing Gerberas outdoors was virtually inconceivable ten years ago. Now these 2nd generation hardy Gerberas can be grown year round in the border! Gerbera 'Sweet Glow’ produces plenty of bright orange daisy blooms that are twice the size of other hardy Gerberas, and make fabulous cut flowers. Blooming reliably from June to October, these wonderful clump forming hardy perennials make a big impact in borders and patio containers. Height and spread: 45cm (18").
More info
    • 1 x 7cm potted plant

    • Despatch: By end of April 2015
    •  
    • £9.99

Gerbera 'Sweet Honey'

Barberton Daisy, Transvaal Daisy

  • New in 2014
  • World exclusive
  • Bigger and better winter hardy gerberas
  • Three seasons of stunning colour
Growing Gerberas outdoors was virtually inconceivable ten years ago. Now these 2nd generation hardy Gerberas can be grown year round in the border! Gerbera 'Sweet Honey’ produces plenty of sunshine yellow daisy blooms that are twice the size of other hardy Gerberas, and make fabulous cut flowers. Blooming reliably from June to October, these wonderful clump forming hardy perennials make a big impact in borders and patio containers. Height and spread: 45cm (18").
More info
    • 1 x 7cm potted plant

    • Despatch: By end of April 2015
    •  
    • £9.99

Geranium 'Jackpot Mixed' F1 Hybrid (Garden-Ready)

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • New in 2014
  • Stunning blooms will last all summer

Our garden-ready plants are now even bigger and better! You can plant our garden-ready plants straight into the garden when they arrive - it couldn’t be easier! There’s no need to re-pot them or to grow them on - just plant and water them. Pretty soon you’ll be enjoying their wonderful displays of colour. If you haven’t got the time or the room to grow plants from small seedlings, then these are for you! You’re sure to get great results because we’ve done the crucial early growing for you. Just plant, water and enjoy!


These weather tolerant, F1 hybrid pelargoniums have more than enough vigour to ensure a spectacular, free flowering display throughout summer. Geranium 'Jackpot Mixed' produce masses of colourful single blooms on neat compact plants. Perfect for filling beds, borders and patio containers. Height: 40cm (16"). Spread: 35cm (14").


Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.

 

More info
    • 30 garden-ready plants

    • Despatch: By end of May 2015
    • Add a 2nd pack for just £5  
    • £14.99

Geranium 'Supreme Mixed'

Pelargonium, Ivy-leaved Geranium, Ivy-leaved Pelargonium

  • New in 2014
For hassle-free gardening, look no further than our pre-planted baskets for easy summer-long colour. We’re always on the look out for ways to make life simpler for our gardening customers. So what could be easier than hanging baskets which are already planted up? We’ve taken the hard work out of creating wonderfully colourful displays - just order our pre-planted baskets of your favourite varieties and position them where you’ll most enjoy their summer colour. Then all you need to do is water them and wait!

A kaleidoscope of vibrant pelargonium flowers fill the trailing stems of Geranium ‘Supreme Mixed’. These stunning Ivy Leaf geraniums are perfect for creating long lasting hanging basket displays that won’t disappoint. Each basket has 5 plants. Height: 30cm (12"). Spread: 45cm (18"). Hanging Basket: 27cm diameter.
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.

 

More info
    • 1 x garden-ready basket with 5 plants

    • Despatch: By end of June 2015
    • Add a 2nd basket for just £5.00  
    • £14.99

Primrose 'Planets Mixed'

Primula

  • New in 2014
  • Distinctive new colours
Freshen up tired spring borders with these exciting new Primulas! Each shapely flower of Primrose ‘Planets Mixed’ has a contrasting inner ring of colour that makes them really stand out from crowd. This unique feature has never been seen before in Primroses - so it’s sure to attract attention. Grow them along path edges or in prominent patio containers where they can really be appreciated. Height and spread: 20cm (8").
More info
    • 12 plug plants

    • Despatch: By end of August 2015
    •  
    • £7.99
    • 24 plug plants

    • Despatch: By end of August 2015
    • SAVE £4.99  
    • £15.98 £10.99
    • 48 plug plants

    • Despatch: By end of August 2015
    • SAVE £14.97  
    • £31.96 £16.99