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 12 products.
 

Scabious 'Butterfly Blue' (Large Plant)

Scabiosa atropurpurea

As the name suggests, this pretty Pincushion Flower is a butterfly magnet. From July to October the long lasting, lavender blue flowers of Scabious 'Butterfly Blue' are produced on slender stems above clumps of grey-green, lance shaped foliage. This cottage garden favourite makes a lovely display when planted in large drifts throughout borders. Perfect for wildlife areas, sunny herbaceous borders and cut flower gardens. Height and spread: 40cm (16").

 

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

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

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

Scabious 'Blue Jeans'

Scabiosa, Pincushion Flower

 Customer Rating
An abundance of blue pincushion scabious flowers will attract bees and butterflies throughout summer. The tall, wiry stems can also be cut to create a pretty display indoors. Scabiosa 'Blue Jeans' blends well among cottage garden borders, where they look particularly effective planted in large drifts. Height and spread: 45cm (18").
More info
    • 6 scabious plug plants

    • Despatch: By end of September 2016
    •  
    • £5.99

Geranium 'Brookside' (Large Plant)

Hardy Geranium, Cranesbill

Intensely blue, saucer shaped flowers with prominent maroon veins make a captivating display throughout summer. Although a relatively new introduction, hardy Geranium 'Brookside' has already become a garden favourite for it exquisite colour. Awarded a coveted RHS AGM, this superb hardy perennial produces finely cut foliage with a spreading habit for weed suppressing ground cover. Cranesbills are cottage garden classics - easy to grow and perfect for beginner gardeners. Height: 60cm (24"). Spread: 45cm (18").

 

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

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

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

Delphinium 'Summer Skies' (Pacific Hybrid) (Large Plant)

Another of the Pacific Hybrids and this one is no less beautiful! Astonishing, tall spikes of pale blue flowers create plenty of vertical interest in herbaceous borders from June to July. Delphinium 'Summer Skies' is prized by flower arrangers for its unusual coloured blooms, and is equally loved by pollinating insects as a rich source of nectar. Height: 150cm (5'). Spread: 75cm (30").

 

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

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

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

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 September 2016
    •  
    • £7.99
    • 2 x 1 litre potted veronica plants

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

Echinops ritro (Large Plant)

Globe Thistle

Echinops ritro is a well loved perennial with a strong architectural impact. Spiky globes of electric blue flowers perch upon silvery green stems, which make superb cut flowers, whether fresh or dried. The late summer blooms rise above clumps of spiny, deeply cut foliage which forms an attractive contrast with other perennials. Awarded and RHS AGM for its garden performance, this Globe Thistle works well in sunny cottage garden borders and hot gravel gardens. Pollinating insects love it too, so plant a few in your wildlife areas for the local bees. Height: 60cm (24"). Spread: 45cm (18").

 

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

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

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

Geranium himalayense (Large Plant)

Hardy Geranium, Cranesbill

Cranesbills are well known as superb ground cover plants, but this one is especially useful, tolerating shady spots particularly well. The lobed foliage forms a pretty backdrop to its purple-blue flowers, which are borne in a main flush during early summer, and then sporadically right through to autumn. As autumn approaches Geranium himalayense gives a final display of vibrant red foliage. This hardy perennial is a stalwart of cottage gardens and perfect for filling out gaps in the front of herbaceuous borders. Height: 45cm (18"). Spread: 60cm (24").

 

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

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

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

Delphinium 'Blue Bird' (Pacific Hybrid) (Large Plant)

Like most of the Pacific hybrid delphiniums, this variety has superb garden presence. Tall spires of clear blue flowers, each with a contrasting white centre, literally tower above clumps of deeply cut foliage. Flowering in June and July, Delphinium 'Blue Bird' makes an impressive feature, adding height and stature to the back of sunny perennial borders. Height: 150cm (5'). Spread: 75cm (30").

 

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

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

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

Pulmonaria 'Trevi Fountain' (Large Plant)

Lungwort

Considered to be one of the longest flowering blue cultivars, this super little Lungwort has much to offer. Pulmonaria 'Trevi Fountain' is particularly striking with deep cobalt blue flowers borne in clusters from March to May. This dependable hardy perennial forms an attractive carpet of silver spotted foliage that makes superb ground cover, particularly in shaded areas. A lovely addition to herbaceous borders and woodland areas, where it will provide a valuable source of nectar for pollinating insects. Height: 30cm (12"). Spread: 50cm (19").

 

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

    • Despatch: By end of September 2016
    •  
    • £11.99
    • 2 x 3 litre potted pulmonaria plants

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

Brunnera macrophylla 'Sea Heart' (Large Plant)

Siberian Bugloss

A choice perennial for the plant connoisseur! Brunnera macrophylla 'Sea Heart' forms dense clumps of shimmering, silvery foliage with distinct grey-green veining. The metallic leaves of this variety are particularly thick, reducing the risk of scorch. Throughout Spring, this lovely Siberian Bugloss bears delicate sprays of pale blue and pink flowers, reminiscent of Forget-Me-Nots. A lovely low maintenance ground cover plant that makes a big impact in shaded woodland areas and cottage garden borders. Height: 30cm (12"). Spread: 60cm (24").

 

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

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 3 litre potted brunnera plants

    • Despatch: By end of September 2016
    •  
    • £20.99

Brunnera macrophylla 'Silver Heart' (Large Plant)

Siberian Bugloss

Silvery heart-shaped leaves form dense clumps of foliage with a beautiful moonlight shimmer. Brunnera macrophylla 'Silver Heart' bears delicate sprays of bright blue flowers in late spring that make a particularly eye-catching display. This choice variety has thicker leaves than many traditional cultivars making it less prone to scorch when grown in a sunny position. For decorative ground cover, Siberian Bugloss is hard to beat, particularly in those dull, shaded corners of the garden. Height: 30cm (12"). Spread: 60cm (24").

 

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

    • Despatch: By end of September 2016
    •  
    • £12.99
    • 2 x 3 litre potted brunnera plants

    • Despatch: By end of September 2016
    •  
    • £20.99

Pulmonaria 'Blue Ensign' (Large Plant)

Lungwort

The beautiful clear blue flowers of this striking Lungwort appear in large clusters from March to May. Unlike many cultivars, the green foliage of Pulmonaria 'Blue Ensign' is broader, unspotted and more refined, creating low spreading clumps that make attractive ground cover. This superb RHS AGM variety is ideal for bringing spring colour to woodland areas and shaded borders, where it will attract pollinating insects to its nectar rich blooms. Height: 35cm (14"). Spread: 45cm (18").

 

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

    • Despatch: By end of September 2016
    •  
    • £11.99
    • 2 x 3 litre potted pulmonaria plants

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