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 39 products.
 

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 August 2016
    •  
    • £9.99
    • 2 x 1 litre potted monarda plants

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

Phlox paniculata 'Laura' (Large Plant)

Phlox paniculata 'Laura' is a particularly fine variety with a long flowering period and good resistance to mildew. This magnificent perennial produces panicles of lilac purple flowers with starry white centres all summer long. The tall stems make superb cut flowers that will fragrance bouquets with their rich, heady scent. This clump forming perennial Phlox is perfect for cottage garden borders where its blooms will attract attention from pollinating insects. Height and spread: 90cm (36").,

Culinary note: Some parts of these flowers are edible. Add the small flowers to fruit salads or crystallise them for decorating desserts. For more details about edible flowers click here.

 

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

    • Despatch: By end of August 2016
    •  
    • £12.99
    • 2 x 2 litre potted phlox plants

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

Anemone tomentosa 'Serenade' (Large Plant)

This charming Anemone makes a tall, herbaceous perennial with generous amounts of late summer blooms, often lasting well into the autumn. The flowers of Anemone tomentosa 'Serenade'are candy pink, and unusually semi-double, with 2 rows of soft petals.

Japanese Anemones are excellent garden plants, which are ideal for beginners. Once established, plants will last for years in the garden, with very little effort. Plants are also extremely rabbit resistant. Height and Spread: 90cm (35").

 

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

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

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

Lupin 'Noble Maiden' (Large Plant)

Lupinus

No cottage garden would be complete without the well loved Lupin, and this one is stunning in its simplicity. Tall spires of snow white blooms rise above clumps of palmate foliage in early summer. Lupin 'Noble Maiden' makes a particularly effective choice for brightening dappled shade in woodlands, where its pale flowers appear luminescent. Height: 90cm (36"). Spread: 75cm (30").

 

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

    • Despatch: By end of August 2016
    •  
    • £12.99
    • 2 x 2 litre potted lupinus plants

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

Anemone x hybrida 'September Charm' (Large Plant)

Anemone x hybrida 'September Charm' is a cottage garden classic. Rose-pink blooms, with outer petals softly tinted in purple, will revive fading borders right through to early autumn. Each solitary flower is held aloft on slender upright stems that make wonderful cut flowers. This well known variety of Japanese Anemone is particularly free flowering, giving a reliable display year after year. The dark green foliage forms an attractive clump that will easily fill a gap in your herbaceous border. A quintessential cottage garden plant which is always popular with pollinating insects. This cultivar also holds an RHS Award of Garden Merit. Height: 90cm (36"). Spread: 40cm (39").

 

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

    • Despatch: By end of August 2016
    •  
    • £12.99
    • 2 x 2 litre potted anemone plants

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

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 August 2016
    •  
    • £9.99
    • 2 x 1 litre potted penstemon plants

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

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 July 2016
    •  
    • £9.99
    • 3 delphinium jumbo plug plants

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

Agapanthus 'Jacaranda' (Large Plant)

Agapanthus 'Jacaranda' is a particularly early flowering variety. Blooming from as early as June, the showy umbels of blue flowers are beautifully striped with deeper blue. This African Blue Lily adds a dramatic vertical presence to herbaceous borders, where its sturdy upright stems will rise to create a lovely focal point. The linear, evergreen foliage forms neat clumps that make good ground cover when planted in large swathes. This reliable hardy perennial copes in most soils, and enjoys a sunny spot. Height: 90cm (36"). Spread: 50cm (20").

 

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

    • Despatch: By end of August 2016
    •  
    • £17.99
    • 2 x 3 litre potted agapanthus plants

    • Despatch: By end of August 2016
    •  
    • £27.99

Inula orientalis (Large Plant)

Intriguing woolly buds reveal bold orange daisy-like blooms throughout the summer which are loved by pollinating insects. This hardy perennial makes a superb filler, with just one plant forming a reasonable clump on its own. Inula orientalis makes a cheerful addition to perennial and mixed borders. Try cutting a few of the blooms brighten up a vase indoors. Height: 90cm (36"). Spread: 60cm (24").

 

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

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

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

Morina longifolia (Large Plant)

This handsome evergreen perennial forms basal rosettes of attractive, glossy foliage with spiny margins and a lovely citrus aroma. From midsummer, Morina longifolia bears imposing, upright stems that are tiered with whorls of white, waxy flowers. As the blooms are pollinated they turn to pink, and eventually red, so that one single stem may carry three different colours for you to admire. The whorlflower is a fascinating specimen for perennial borders and makes a pleasing cut flower too. Height: 90cm (36"). Spread: 30cm (12").

 

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

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

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

Euphorbia 'Ascot Rainbow'

Euphorbia x martini, Spurge

  • Ideal for difficult dry gardens
  • Year-round interest
  • Vivid spring flowerheads

It's hard to convey the myriad of colour changes this showy foliage plant goes through each season. Here goes! The strap-like stripy leaves emerge with an intense pink flush, maturing to grey-green with yellow margins and red markings. The plants also take on a pink tinge during the coldest parts of winter. This is all topped off in spring with a display of billowing flowerheads in vivid shades of green, yellow, cream and red. Height and spread: 90cm (36").
More info
    • 1 euphorbia jumbo plug plant

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 3 euphorbia jumbo plug plants

    • Despatch: By end of August 2016
    • SAVE* £12.99  
    • £16.99