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.


For beautiful summer flowers browse our range of annual plants.



We have found 9 products.
 

Delphinium 'New Millennium Dwarf Mixed'

We source our delphinium stocks from the best breeder in the world to guarantee top performance from our plants in your garden. The towering flower spires that make delphiniums a must-have garden perennial, can require sturdy staking to prevent them flopping under wind and rain. We're looking to change that with Delphinium 'New Millennium Juniors Mixed'. The sturdy upright stems don't need any staking or support, but give the same cottage garden feel as traditional varieties. From the world famous breeding of Terry Dowdeswell in New Zealand, these shorter, sturdier plants have been bred to perfection, with clear colours, evenly spaced florets, long flowering and high disease resistance. Height: 75cm (30"). Spread: 60cm (24").
More info
    • 5 delphinium postiplug plants

    • Despatch: By end of May 2016
    •  
    • £9.99
    • 10 delphinium postiplug plants

    • Despatch: By end of May 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

Wallflower 'Bowles's Mauve' (Large Plant)

Erysimum, Cheiranthus

Flowering from February right through to midsummer, this hardy perennial well deserves its RHS AGM. Although relatively short lived, Wallflower 'Bowles Mauve' makes up for it in sheer flower power, producing masses of mauve flowers above clumps of grey-green, evergreen foliage. Versatile and undemanding, this tough little Eryisimum copes in even the poorest of soils. Perfect for filling beds and containers with long lasting colour. Height: 75cm (30"). Spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1.5 litre potted wallflower plant

    • Despatch:
    •  
    • £9.99
    • Out of stock
    • 2 x 1.5 litre potted wallflower plants

    • Despatch:
    •  
    • £16.99
    • Out of stock

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

    • Despatch:
    •  
    • £14.99
    • Out of stock

Cosmos atrosanguineus 'Dark Secret' (Large Plant)

Bidens atrosanguinea, Chocolate Plant

Chocoholics need to stop right here- Chocolate Cosmos flowers have the ultimate chocolate fragrance! The flowers are just as sensual in their appearance- in deep maroon, and held aloft neat clumps of foliage.

Chocolate Cosmos can be used in many different ways in the garden; as a container plant, border plant or bedding plant. Plants enjoy hot summers, and are quite drought tolerant.Height and Spread: 50cm (19").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

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 displays fade away! Height: 75cm (30"). Spread: 30cm (12").

 

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

    • Despatch: By end of May 2016
    •  
    • £7.99
    • 1 x 2 litre potted sedum plant

    • Despatch: By end of November 2015
    •  
    • £11.99
    • 2 x 1 litre potted sedum plants

    • Despatch: By end of May 2016
    •  
    • £12.99
    • 2 x 2 litre potted sedum plants

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

Aquilegia chrysantha 'Yellow Star' (Large Plant)

Columbine, Granny's Bonnet

Aquilegia chrysantha 'Yellow Star’ stands out from other cultivars for its yellow flowers - a colour that is quite unusual among Aquilegias. This captivating Columbine blooms with long spurs that perch upon tall, slender stems from May to July, and make delightful cut flowers. This charming cottage garden perennial is undemanding and easy to grow. A lovely addition to borders, woodland areas and wildlife gardens, where it will attract plenty of pollinating insects. 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:
    •  
    • £9.99
    • Out of stock
    • 2 x 1 litre potted aquilegia plants

    • Despatch:
    •  
    • £14.99
    • Out of stock

Physalis alkekengi var. franchetii (Large Plant)

Chinese Lantern

Physalis alkekengi var. franchetii is better known by its culinary name of Cape Gooseberry. Tiny, creamy-white flowers appear in midsummer above oval green foliage. This hardy perennial is mainly grown for its edible berries which later develop within red, papery Chinese Lantern calyces. This vibrant autumn display brings a bright splash of colour to fading perennial borders. The stems can be cut to create wonderful decorative flower arrangements. If left on the plant the calyces will slowly skeletonize, adding ornate winter interest to your garden. Height: 75cm (30"). Spread: 90cm (36").

 

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

    • Despatch: By end of May 2016
    •  
    • £9.99
    • 2 x 1 litre potted physalis plants

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

Anemone hupehensis var. japonica 'Prinz Heinrich' (Large Plant)

Chinese Anemone

This vibrant Chinese Anemone bears a profusion of deep pink flowers in late summer. Each tightly rounded bud reveals semi-double flowers, with delicately rolled petals that fade to paler pink as they mature. Anemone hupehensis var. japonica 'Prinz Heinrich' makes a delightful border perennial, forming a spreading clump of palmate, dark green foliage. An elegant and easy to grow plant that makes a pretty cut flower and is well loved by bees and other pollinators. Height: 75cm (30"). Spread: 60cm (24").

 

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

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

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