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 26 products.
 

Lewisia cotyledon 'Elise Mixed'

  • First lewisia to repeat flower throughout summer
Masses of starry flowers in a range of fruity colours, including stripes and picotees adorn slender stems above neat rosettes of fleshy leaves. Traditionally grown as perennials in alpine houses, new breeding has brought us Lewisia 'Elise Mixed' which flowers in its first year, making a bright and attractive annual bedding plant! Winner of a Fleuroselect Gold Medal, these exceptional plants repeat flower throughout summer, lighting up beds, borders, containers and rock gardens. Tolerating heat and drought well, Lewisia is also perfectly happy with cooler temperatures and will overwinter with protection from wet weather. Height: 25cm (10"). Spread: 30cm (12").
More info
    • 24 lewisia plug plants

    • Despatch:
    •  
    • £16.99
    • Out of stock
    • 48 lewisia plug plants

    • Despatch:
    • SAVE *£10.99  
    • £33.98 £22.99
    • Out of stock

Helianthemum Collection

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 'Peachy Keen' - New peach bloomed variety 'Peachy Keen' has an overwhelming amount of petals, further boosting the effect in your garden!
More info
    • 5 helianthemum jumbo plug plants - 1 of each variety

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 10 helianthemum jumbo plug plants - 2 of each variety

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

Lucky Dip Winter Bedding Mix

If our selection of winter bedding planting options leaves you spoilt for choice, let us do the design work for you! Quickly pick our Lucky Dip Mix instead of agonising over all the individual options and we guarantee to send you a winning selection of winter performers for a wide range of uses. Set the mix in containers and baskets or beds and borders and you can be sure of a bright and cheery display to warm up the garden this winter and spring. Height and spread varies. More info
    • 24 lucky dip plug plants

    • Despatch: By end of August 2016
    •  
    • £5.99
    • 30 lucky dip garden ready plants

    • Despatch: By end of September 2016
    •  
    • £11.99
    • 48 lucky dip plug plants

    • Despatch: By end of September 2016
    •  
    • £7.99
    • 60 lucky dip garden ready plants

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

Wallflower 'Dwarf Scented Mixed'

Erysimum

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

Delphinium 'Flamenco'

Delphinium 'Flamenco' is a huge improvement on previous double flowering varieties. Double delphiniums have been around for years, but older forms often produce weak, disease-prone plants. Modern breeding has changed all that! Delphinium 'Flamenco' has been developed with garden performance and disease resistance high on the agenda. Compact plants produce sturdy flower spikes, covered in fully double frilly rosettes. The elegant blooms are the perfect summer border filler and also perform well in container displays. The stocky stems require no staking and make a welcome addition to home grown cut flower bouquets. Height: 90cm (36"). Spread: 30cm (12in). More info
    • 1 delphinium jumbo plug plant

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 3 delphinium jumbo plug plants

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

Geranium cinereum 'Jolly Jewel Collection'

Hardy Geranium, Cranesbill

  • Create a carpet of colour
  • Weed-suppressing Hardy Geranium
  • Long flowering season

The dense foliage on these mat-forming plants are ideal for carpeting difficult dry, sunny banks or filling space in borders and rockeries. Plants hug the ground, meaning the weeds don't even get a look in! These long-lived hardy Geraniums are tough and last for years. The 'Jolly Jewel' series boasts a fruity selection of colours, barely resting it's flower power from spring to late summer. Height: 25cm (10"). Spread: 30cm (12").
More info
    • 3 x 9cm potted geranium plants

    • Despatch: By end of September 2016
    •  
    • £19.99
    • 6 x 9cm potted geranium plants

    • Despatch: By end of September 2016
    •  
    • £29.99

Pansy 'Frizzle Sizzle' Mixed

Viola x wittrockiana

 Customer Rating
Plant a rainbow of colours and frills that bring your garden to life during late winter and spring. Cheery blooms on compact plants with a hint of pansy scent and incredible flowering performance. Pansy 'Frizzle Sizzle' is ideal for brightening up your beds, containers, Flower Pouches® and window boxes. Height and spread: 23cm (9").

 

Culinary note: Pansy flowers are edible.

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.

More info
    • 36 pansy plug plants

    • Despatch: By end of August 2016
    •  
    • £13.99
    • 72 pansy plug plants

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

Wallflower 'Sugar Rush' (Garden Ready)

Erysimum, Cheiranthus

  • 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.

Winner in the 'Best New Bedding Plant' category at the Grower of the Year Awards 2013, this is one of the most exciting wallflowers to emerge in recent years. Dense, fragrant flower spikes in shades of cream, yellow, red and purple appear not only in the spring, but throughout the autumn too, blooming in just 6 weeks from an August planting! With a delightful sweet fragrance and compact, multi-branching habit, Wallflower 'Sugar Rush' is perfect for beds, borders, containers and window boxes, creating a mass of colour and scent when much of the garden is dormant. Versatile and undemanding, wallflowers are tough enough to cope in even the poorest soils. Height and spread: 30cm (12").

 

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

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

Sedum 'Matrona' (Large Plant)

Sedum telephium, Stonecrop

Sedum will attract butterflies to the garden in their droves. Sedum plants are long-lasting, hardy and drought tolerant. Sedum 'Matrona' forms a clump of foliage, with a unique bronze tinge, contrasting beautifully with its pink autumn blooms.

Sedum will thrive in hot, sunny borders, and are ideal for beginners. Their autumn flowering period is welcomed, bringing new colour to the garden as summer bedding dipslays fade away! Height: 75cm (30"). Spread: 30cm (12").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 3.5 litre potted sedum plant

    • Despatch: By end of July 2016
    •  
    • £10.99
    • 2 x 3.5 litre potted sedum plants

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

Veronica longifolia 'Candied Candle' (Large Plant)

Speedwell

Veronica 'Candied Candle' bears detailed flower spikes in candy pink. Plants are strong, weatherproof and untroubled by pest and disease. This late-flowering perennial will establish easily into any border, and flower it's heart out from late summer, attracting hosts of butterflies and beneficial insects. Veronica plants are very low-maintenance, super hardy and flower for a long period. Height: 50cm (20"). Spread: 30cm (12").

 

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

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 1 x 2 litre potted veronica plant

    • Despatch: By end of July 2016
    •  
    • £12.99
    • 2 x 1 litre potted Veronica plants

    • Despatch: By end of July 2016
    •  
    • £16.99
    • 2 x 2 litre potted veronica plants

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

Poppy 'Gartenzwerg' (Large Plant)

Papaver nudicaule, Arctic Poppy, Icelandic Poppy

Icelandic Poppies are absolutely glorious! The flowers of Poppy 'Gartenzwerg' are silky and glisten in the sun, in lovely shades of coral pink and red. The late spring flowers of this pretty biennial are some of the first for the mixed border, and will certainly attract comment from the neighbours!Icelandic Poppies are ideal for cutting, thanks to the upright blooms and durable stems. When cutting the blooms for indoors, sear the bottom of the stems over a naked flame to seal them. Height and spread: 30cm (12").

 

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

    • Despatch: By end of July 2016
    •  
    • £9.99
    • 2 x 1 litre potted poppy plants

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

Aquilegia vulgaris 'William Guinness' (Large Plant)

Columbine, Granny's Bonnet, Aquilegia 'Magpie'

The striking black bonnets of Aquilegia 'William Guiness' make a superb contrast with the white corolla. The exquisite blooms of this classic cottage garden perennial are carried on wiry stems, set above pretty ferny foliage. This hardy Columbine is perfect for en masse in borders and shady woodland edges, and makes an attractive cut flower for a vase indoors. Height: 75cm (30"). Spread: 30cm (12").

 

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

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

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