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 54 products.
 

Shasta Daisy 'Goldfinch' (Large Plant)

Leucanthemum × superbum

This exciting modern cultivar is the most yellow Leucanthemum to date. The semi double blooms of Shasta Daisy 'Goldfinch' open a bright lemon colour that slowly fades to pale ivory as the blooms age. This compact variety is well branched and bushy, flowering for weeks from late spring onwards and attracting bees and butterflies to its nectar rich blooms. This reliable hardy perennial is undemanding and easy to grow in borders and wildlife areas. It also makes a lovely cut flower. Height and spread: 60cm (24").

 

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

    • Despatch: By end of August 2016
    •  
    • £12.99
    • 2 x 3 litre potted leucanthemum plants

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

Foxglove 'Milk Chocolate' (Large Plant)

Digitalis parviflora

Rich chocolate coloured flowers tightly fill the slender flower spikes of this superb Foxglove. Digitalis parviflora 'Milk Chocolate' is a rarely seen variety with glossy foliage that complements the unusual blooms. Native to Spain, this Foxglove is surprising hardy and enjoys a lightly shaded position in the garden. The nectar rich blooms prove particularly attractive to bees, making this a useful addition to wildlife areas. Pair it with white flowered Digitalis for a particularly elegant contrast. Height: 60cm (24"). Spread: 30cm (12").

 

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

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

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

Iris 'Re-Blooming Collection'

Bearded Iris

 Customer Rating

A beautiful selection of hardy, drought tolerant bearded iris with exceptional disease and insect resistance. With the first flowers appearing in spring, and a second flush in autumn, these really are outstanding hardy perennials; perfect for summer borders. These majestic, tall bearded iris flowers have a delicate scent and make impressive cut flowers for a vase indoors. Height: 90cm (36"). Spread: 30cm (12").


  • Collection comprises:
  • Iris 'Orange Harvest' - Rust orange flowers.
  • Iris 'Victoria Falls' - Light blue iris flowers.
  • Iris 'Cantina' - Violet blooms.
  • Iris 'Buckwheat' - Golden yellow petals.
  • Iris 'Pass the Wine' - Wine red flowers.

 

4 for 3 on autumn planting bulbs
More info
    • 5 Iris rhizomes - 1 of each variety

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 10 Iris rhizomes - 2 of each variety

    • Despatch: By end of September 2016
    • SAVE* £64.91  
    • £89.90 £24.99

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

Lupin 'Russell Hybrids Mixed' (Large Plant)

Lupinus

Tall spires of tightly packed flowers rise above clumps of palmate foliage in a magical array of colours. This wonderful mix of the ever popular 'Russell Hybrids' is ideal for adding height and structure to the back of perennial borders and woodland edges. A distinctive hardy perennial that remains a cottage garden favourite. Height: 90cm (36"). Spread: 50cm (20").

 

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

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

    • Despatch: By end of August 2016
    • SAVE *£2.99  
    • £19.98 £16.99

Cerinthe major 'Purpurascens' (Large Plant)

Honeywort

 Customer Rating
Also known as Honeywort, this unusual annual bears rounded, blue-green leaves on slender, upright stems. From late spring onwards masses of nodding, rich purple flowers, surrounded by blue-purple bracts appear at the stem tips, which are highly attractive to bees. With a bushy habit, Cerinthe major ‘Purpurascens’ is a fantastic addition to annual beds or used to fill gaps in herbaceous borders, where it is happy in any well drained soil. Height: 60cm (24"). Spread: 45cm (18").

 

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

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

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

Lupin 'Russell Hybrids Mixed'

Lupinus

Tall spires of tightly packed flowers rise above clumps of palmate foliage in a magical array of colours. This wonderful mix of the ever popular 'Russell Hybrids' is ideal for adding height and structure to the back of perennial borders and woodland edges. A distinctive hardy perennial that remains a cottage garden favourite. Height: 90cm (36"). Spread: 50cm (20"). More info
    • 3 x 5cm potted lupin plants

    • Despatch: By end of August 2016
    •  
    • £9.99
    • 6 x 5cm potted lupin plants

    • Despatch: By end of August 2016
    • SAVE *£6.99  
    • £19.98 £12.99

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 August 2016
    •  
    • £14.99
    • 3 Rose Lily Grass jumbo plug plants

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

Salvia 'Amistad' (Large Plant)

Sage

Salvia 'Amistad' is an exceptionally beautiful new variety. Exquisite rich purple flowers are carried on tall, near-black stems above a mound of lush green foliage. With regular deadheading, this magnificent hardy perennial can bloom almost continuously from May right through to October, attracting a host of bees and butterflies throughout the season. Ornamental Sage has long been a stalwart of cottage garden borders, and this one is no exception. Perfect for exotic planting schemes and wildlife gardens too. Height: 120cm (48"). Spread: 50cm (20").

 

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

    • Despatch: By end of September 2016
    •  
    • £7.99
    • 1 x 2 litre potted salvia plant

    • Despatch: By end of September 2016
    •  
    • £11.99
    • 2 x 1 litre potted salvia plants

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 2 litre potted salvia plants

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

Iris 'Orange Harvest' (Re-Blooming)

Bearded Iris

Vibrant orange blooms with a delicate fragrance make Iris 'Orange Harvest' a worthy addition summer borders. With the first flowers appearing in late spring and continuing into summer, these really are outstanding hardy perennials. These majestic bearded iris flowers also make impressive cut flowers for a vase indoors. Height: 90cm (36"). Spread: 40cm (16").

 

4 for 3 on autumn planting bulbs
More info
    • 1 Iris rhizome

    • Despatch: By end of September 2016
    •  
    • £8.99

Lupin 'The Page' (Large Plant)

Lupinus

Lupins are cottage garden favourites with colourful, often two-toned, strong flower spikes. Plants are undemanding, and give a long flowering period and excellent garden performance in sun or shade.

Lupin 'The Page' is a particular favourite, with blooms in 2 distinct shades of red. Those flower spikes are invaluable in the early season herbaceous border, as the display begins in June each year. Height: 1.2m (3.9') Spread: 60cm (24").

 

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

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

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

Veronica spicata 'Royal Candles' (Large Plant)

Speedwell

Veronica 'Royal Candles' produces an endless supply of upright flower spikes in a deep shade of indigo blue. With a spreading habit it will quickly form a dense mat of toothed, mid green foliage that makes superb groundcover. This low growing perennial makes a lovely feature at the front of a well drained border, where it will spill over to soften edges and add a splash of summer colour. Height and 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 August 2016
    •  
    • £7.99
    • 2 x 1 litre potted veronica plants

    • Despatch: By end of August 2016
    •  
    • £12.99