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 3 products.
 

Comfrey 'Bocking 14'

Symphytum x uplandicum 'Bocking 14', Russian Comfrey

Grow your own soil conditioner! Comfrey 'Bocking 14' contains high levels of basic NPK nutrients and because it is a sterile hybrid, it won't self seed all over your garden.


The nutrient rich foliage of comfrey can be used as a compost activator, mulch, or soaked in barrels of water for 3 to 5 weeks to make a useful liquid feed for tomatoes and beans. Scatter the wilted leaves throughout potato trenches just before planting, to fertilise the crop and improve their flavour! Once established, this quick growing plant can be cut 3 or 4 times throughout the growing season, for a constant supply of nutrient rich, organic, comfrey fertiliser. Height: 100cm (40"). Spread: 75cm (30").


Useful links:

How to grow herbs

More info
    • 5 comfrey root cuttings

    • Despatch:
    •  
    • £11.99
    • Out of stock

Nepeta racemosa (Large Plant)

Catmint, Nepeta mussinii

With a low, spreading habit, Nepeta racemosa makes good ground cover, and is perfect for softening the edges of paths and borders. From June to September this attractive Catmint bears a profusion of violet-purple flower spikes that smother the mid-green leaves. Like all Nepeta, this hardy perennial is always busy with bees and has a peculiar effect on cats who adore its aromatic foliage. Height: 30cm (12"). Spread: 45cm (18"). More info
    • 1 x 1 litre potted nepeta plant

    • Despatch: By end of September 2015
    •  
    • £9.99
    • 2 x 1 litre potted nepeta plants

    • Despatch: By end of September 2015
    •  
    • £14.99

Nepeta 'Six Hills Giant' (Large Plant)

Catmint

Nepeta 'Six Hills Giant' is one of the most widely grown Catmints. This popular hardy perennial bears its lilac-blue flower spikes above mounds of silvery-green foliage from early summer onwards. The nectar rich blooms are always attractive to bees and of course, cats adore the aromatic foliage. Plant this tall variety in generous swathes, letting it spill from borders and soften path edges. A cottage garden favourite and a lovely cut flower too. Height: 90cm (35"). Spread: 60cm (24"). More info
    • 1 x 1 litre potted nepeta plant

    • Despatch: By end of April 2016
    •  
    • £9.99
    • 2 x 1 litre potted nepeta plants

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