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 5 products.
 

Perovskia atriplicifolia 'Silvery Blue' (Large Plant)

Russian Sage

Late summer panicles of lavender blue flowers sit above a strong framework of metallic silver stems. Perovskia atriplicifolia 'Silvery Blue' is particularly appealing for its aromatic, shimmering foliage that leaves other varieties looking dull in comparison. Russian Sage is a versatile hardy shrub that loves a sunny spot, and happily tolerates drought and exposed coastal positions. Grow it in large swathes for maximum impact, where it will attract plenty of butterflies and pollinating insects to your garden borders. Height and spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 10 litre potted perovskia plant

    • Despatch: By end of July 2016
    •  
    • £29.99
    • 1 x 3.5 litre potted plant

    • Despatch: By end of July 2016
    •  
    • £13.99
    • 1 x 3.6 litre potted perovskia plant

    • Despatch: By end of May 2016
    •  
    • £16.99
    • 2 x 10 litre potted perovskia plants

    • Despatch: By end of July 2016
    •  
    • £44.99
    • 2 x 3.5 litre potted plants

    • Despatch: By end of July 2016
    •  
    • £22.99
    • 2 x 3.6 litre potted perovskia plants

    • Despatch: By end of May 2016
    •  
    • £25.99

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 May 2016
    •  
    • £12.99
    • 2 x 3 litre potted brunnera plants

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

Lamium maculatum 'Pink Pewter' (Large Plant)

Dead Nettle

Lamium maculatum 'Pink Pewter' is a tough and resilient hardy perennial, thriving in shade on almost any soil. This vigorous dead nettle will form a carpet of sparkling silver foliage with deep green margins. From April through to midsummer the clusters of salmon pink flowers provide a rich supply of nectar for pollinating insects. A first-class ground cover plant for a shaded spot - perfect for creeping through woodlands, wildlife gardens, rockeries or borders. Height: 10cm (8"). Spread: 60cm (24").

 

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

    • Despatch: By end of May 2016
    •  
    • £7.99
    • 2 x 1 litre potted lamium plants

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

Verbascum olympicum (Large Plant)

Verbascum longifolium var. pannosum, Olympian Mullein

For almost instant impact in cottage garden borders, look no further than Verbascum olympicum. This imposing perennial will fill a gap in hot dry borders and makes a spectacular focal point, growing to 2 metres in next to no time! The felted, silver rosette of basal foliage plays host to tall spikes of buttery-yellow flowers. Verbascum olympicum is a relatively short lived perennial, which tends to bloom in its third year, and often dies after its spectacular display. However this Mullein is a vigorous self-seeder so you can look forward to plenty of new seedlings popping through the soil to take its place.

This low maintenance perennial is an excellent summer addition to borders, performing best in poor soils where many other plants would struggle to establish. A low maintenance Mullein for cottage gardens and wildlife gardens. Height: 2m (6.6'). Spread: 60m (24").

 

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

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

    • Despatch:
    •  
    • £16.99
    • Out of stock

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 May 2016
    •  
    • £12.99
    • 2 x 3 litre potted brunnera plants

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