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 17 products.
 

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

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

Penstemon 'Kilimanjaro' (Large Plant)

Part of the volcano series, Penstemon’ Kilimanjaro’ bears its pink blooms continuously from June right through to October. This semi-evergreen perennial has a neat upright habit making it a well behaved specimen for perennial borders. Try it in wildlife areas too - pollinating insects love its nectar rich blooms. Height: 75cm (30"). 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 September 2016
    •  
    • £9.99
    • 2 x 1 litre potted penstemon plants

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

Penstemon 'Pensham Wedding Day' (Large Plant)

Ivory white bells crowd the upright stems of Penstemon 'Pensham Wedding Day’ above a neat clump of narrow semi-evergreen foliage. Brimming with understated elegance, this hardy perennial blends effortlessly into herbaceous borders. Like all of the Pensham Penstemons, this cultivar has been bred to withstand lower temperatures and inclement weather, making it perfect for UK summers. It has staying power too - flowering continuously from early summer through to October. Height: 75cm (30"). Spread: 60cm (24").

 

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

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

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

    • Despatch: By end of July 2016
    •  
    • £14.99
    • 2 x 2 litre potted penstemon plants

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

Penstemon 'Pensham Czar' (Large Plant)

Phenomenal stamina and indifference to rain and drought means that Penstemon 'Czar' will flower each year for an incredible five months. Mesmerising, lilac bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. 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 July 2016
    •  
    • £9.99
    • 2 x 1 litre potted penstemon plants

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

Penstemon 'Sour Grapes' (Large Plant)

Its unusual colouring makes Penstemon 'Sour Grapes' instantly recognisable. This well loved variety bears upright spikes of alluring bell-shaped flowers in a peculiar blend of pink and blue, being neither one nor the other. This hardy semi-evergreen perennial is easy to grow, blooming over an exceptionally long period. Penstemons make a colourful contribution to herbaceous borders and wildlife areas where they will attract bees and other pollinators throughout the summer. Height: 60cm (24"). 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 September 2016
    •  
    • £9.99
    • 1 x 2 litre potted penstemon plant

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

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 2 x 2 litre potted penstemon plants

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

Penstemon 'Pensham Laura' (Large Plant)

Phenomenal stamina and indifference to rain and drought means that Penstemon 'Laura' will flower each year for an incredible five months. Mesmerising, pink bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. 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 July 2016
    •  
    • £9.99
    • 2 x 1 litre potted penstemon plants

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

Penstemon 'Amelia Jayne'

Phenomenal stamina and indifference to rain and drought means that Penstemon 'Amelia Jayne' will flower each year for an incredible five months. Mesmerising, red bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. Height: 90cm (36"). Spread: 45cm (18").
More info
    • 3 penstemon jumbo plug plants

    • Despatch:
    •  
    • £9.99
    • Out of stock

Penstemon 'Laura'

Phenomenal stamina and indifference to rain and drought means that Penstemon 'Laura' will flower each year for an incredible five months. Mesmerising, pink bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. Height: 90cm (36"). Spread: 45cm (18").
More info
    • 3 penstemon jumbo plug plants

    • Despatch: By end of July 2016
    •  
    • £9.99

Penstemon 'Appleblossom' (Large Plant)

This pretty little Penstemon bears pale pink, tubular flowers with white throats, above glossy, narrow foliage. Penstemon 'Appleblossom' is semi-evergreen, with a neat, bushy habit that sits nicely towards the front of perennial borders. This popular variety is easy to grow and holds an RHS AGM for its superb garden performance. Height and spread: 60cm (24").

 

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

    • Despatch: By end of September 2016
    •  
    • £9.99
    • 1 x 2 litre potted penstemon plant

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

    • Despatch: By end of September 2016
    •  
    • £14.99
    • 2 x 2 litre potted penstemon plants

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

Penstemon 'Garnet' (Large Plant)

Penstemon 'Andenken an Friedrich Hahn'

Often sold as Penstemon 'Andenken an Friedrich Hahn', it’s catchier name of Penstemon ‘Garnet’ seems far more descriptive. Deep wine-red, bell-shaped flowers fill the upright stems above a clump of narrow-leaved foliage. Penstemon ‘Garnet’ is a vigorous variety which makes quite an impact in perennial gardens and exotic, hot coloured borders, and like all Penstemons, is popular with pollinating insects. Height: 75cm (30"). Spread: 60cm (24").

 

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

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

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

    • Despatch: By end of July 2016
    •  
    • £14.99
    • 2 x 2 litre potted penstemon plants

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

Penstemon 'Raven' (Large Plant)

Sumptuous, tubular, blackcurrant blooms rise in elegant spikes above clumps of narrow foliage for literally months on end. Penstemon ‘Raven’ is a striking cultivar, particularly when teamed with pale flowered perennials such as anthemis and gypsophila. Like all penstemon it is a magnet for pollinating insects earning it a place in wildlife areas too. This semi evergreen perennial is easy to grow and holds an RHS AGM for its garden performance. Height: 90cm (36"). Spread: 30cm (12").

 

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

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

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

    • Despatch: By end of July 2016
    •  
    • £14.99
    • 2 x 2 litre potted penstemon plants

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

Penstemon 'Pensham Amelia Jayne' (Large Plant)

Phenomenal stamina and indifference to rain and drought means that Penstemon 'Amelia Jayne' will flower each year for an incredible five months. Mesmerising, red bells with satiny white throats are carried above semi evergreen foliage. These popular hardy perennials deserve prime spots in the garden or on the patio where they can really show off. Pensham penstemons also boast slug resistance and semi-evergreen foliage, giving an all round winning performance for many years. 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 July 2016
    •  
    • £9.99
    • 2 x 1 litre potted penstemon plants

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