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.



We have found 36 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 root cuttings

    • Despatch: By end of May 2015
    •  
    • £11.99

Verbena bonariensis 'Lollipop'

Glandularia, Verbena patagonica

 Customer Rating
  • Unique mini Verbena for your patio
Like its parents, Verbena bonariensis 'Lollipop' boasts the same tight clusters of floating purple flowers, but has short, compact stems that reach only half the height. Well shaped, uniform plants with an open airy habit attract butterflies to their glowing blooms from June to September. This fabulous hardy dwarf verbena is perfectly proportioned for patio pots and the front of borders where it creates a wonderful delicate airy effect. Height and spread: 60cm (24").
More info
    • 3 jumbo plug plants

    • Despatch: By end of May 2015
    •  
    • £9.99
    • 6 jumbo plug plants

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

Penstemon cobaea 'Wedding Bells' Mixed (Garden-Ready)

You can plant our garden-ready plants straight into the garden when they arrive - it couldn’t be easier! There’s no need to re-pot them or to grow them on - just plant and water them. Pretty soon you’ll be enjoying their wonderful displays of colour. If you haven’t got the time or the room to grow plants from small seedlings, then these are for you! You’re sure to get great results because we’ve done the crucial early growing for you. Just plant, water and enjoy!

Penstemon cobaea 'Wedding Bells' (also known as Orchestra Mixed) combines some of the best penstemons from T&M's own breeding programme. Satin, bell-shaped flowers in a variety of bright colours and patterns are carried over a particularly long flowering period, above glossy, semi-evergreen foliage. A fantastic alternative to Antirrhinums (snapdragons) in annual bedding schemes, these compact penstemon plants boast large flowers and superb weather resistance. Easy to maintain, these hardy perennials are also attractive to bees. Height: 50cm (18"). Spread: 45cm (18").

Useful links:

Gardening news: Move over marigolds... new bedding plants fly in the face of tradition

 

More info
    • 30 garden-ready plants

    • Despatch: By end of June 2015
    • Add a 2nd pack for just £5  
    • £14.99

Chrysanthemum 'Bumper Pack'

Subtle autumnal shades harmonise with striking, bold colours in this outstanding chrysanthemum collection. A bold combination of tall, half hardy varieties with reflexed and incurved petals, mixed with lower growing, hardy chrysanthemums that form neat mounds of colour. Savour the colourful shades of these magnificent perennials in your autumn garden when summer bedding plants have faded away. Their vibrant blooms also make excellent and long lasting cut flowers. Height: Up to 90cm (36?). Spread: 45cm (18?).


Chrysanthemum collection contains 5 plants each of:
Incurved Mixed ? Sturdy stems bear rounded blooms with magnificent incurved petals.
Hardy Patio Mixed ? Well branched plants produce rounded domes of colour.
Decorative Mixed ? Backward facing petals create colourful flower heads on strong stems.


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 15 Postiplug plants - 5 of each variety

    • Despatch: By end of May 2015
    • SAVE £10.98  
    • £29.97 £18.99

Nepeta 'Patchwork Mixed' (Garden-Ready)

Catmint

  • Splashes of colour, perennial too!
You can plant our garden-ready plants straight into the garden when they arrive - it couldn’t be easier! There’s no need to re-pot them or to grow them on - just plant and water them. Pretty soon you’ll be enjoying their wonderful displays of colour. If you haven’t got the time or the room to grow plants from small seedlings, then these are for you! You’re sure to get great results because we’ve done the crucial early growing for you. Just plant, water and enjoy!

A new twist on a classic cottage garden plant! Nepeta ‘Patchwork Mixed’ has neat, compact growth that makes it perfect for summer bedding and patio pots. Catmint is well loved by gardeners and their cats for its sweet, pungent aroma and hazy pink and blue flowers. This hardy little perennial has a loose, relaxed habit that makes it perfect for creating soft, informal displays. Height and spread: 40cm (16").

 

More info
    • 30 garden-ready plants

    • Despatch: By end of June 2015
    • Add a 2nd pack for just £5  
    • £21.98 £14.99

Chrysanthemum 'Incurved Mixed'

Sturdy stems bear rounded blooms with magnificent incurved petals that are perfect for long-lasting flower arrangements. Savour the colour of these magnificent half hardy chrysanthemums in your autumn garden when summer bedding plants have faded away. This vibrant collection will reward you with flamboyant blooms right through until the frosts. Disbudding the stems will produce fewer, but larger blooms, or let them grow naturally for a mass of smaller flowers. Height: 90cm (36"). Spread: 45cm (18").


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 5 Postiplug plants

    • Despatch: By end of May 2015
    •  
    • £9.99

Salvia x jamensis 'Hot Lips'

Sage

Spice up your summer patio pots with Salvia ‘Hot Lips’. Naturally bushy plants boast eye-catching flower spikes with open-mouthed, bicolour blooms. In particularly hot weather look out for individual flowers in solid red or solid white. The aromatic foliage has a fine blackcurrant fragrance that only adds to its charm. This showy ornamental sage is perfect for cottage garden borders and containers, or incorporated into bedding schemes for a vibrant summer display. Although perennial, this half hardy Salvia will appreciate some protection from winter weather. Height: 90cm (35"). Spread: 60cm (24"). More info
    • 5 Postiplug plants

    • Despatch: By end of May 2015
    •  
    • £9.99
    • 10 Postiplug plants

    • Despatch:
    • SAVE £4.99  
    • £19.98 £14.99
    • Out of stock

Chrysanthemum 'Hardy Patio Mixed'

  • NEW for 2012

As the days shorten, these shimmering chrysanthemums come into their own. Bright colours and long-lasting blooms give a real boost to the autumn garden when many things are looking tired. This collection of hardy perennial patio Mums will reward you with rounded domes of colour from September right through until the first frosts. Superb for growing in borders and containers, and the sturdy stems make excellent cut flowers too. Our young plants are supplied as a mix of 4 named varieties. Height: 100cm (39?). Spread: 60cm (24?).


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 5 Postiplug plants - 1 of each colour

    • Despatch: By end of May 2015
    •  
    • £9.99

Nepeta 'Patchwork Mixed'

Catmint

  • Splashes of colour, perennial too!
A new twist on a classic cottage garden plant! Nepeta ‘Patchwork Mixed’ has neat, compact growth that makes it perfect for summer bedding and patio pots. Catmint is well loved by gardeners and their cats for its sweet, pungent aroma and hazy pink and blue flowers. This hardy little perennial has a loose, relaxed habit that makes it perfect for creating soft, informal displays. Height and spread: 40cm (16").
More info
    • 24 plug plants

    • Despatch: By end of May 2015
    •  
    • £12.99
    • 48 plug plants

    • Despatch: By end of May 2015
    •  
    • £17.99

Mimulus x hybridus 'Magic Rainbow'

Diplacus, Monkey Flower, Musk

 Customer Rating
These low growing, bushy mimulus plants produce masses of tubular blooms, looking much like exotic, wide snapdragon flowers. Although monkey flowers are tender perennials, they are best treated as an annual for beds, containers and baskets, except in the mildest parts of the country. Mimulus 'Magic Rainbow' is ideal to add a bright splash of summer colour from June to August in lightly shaded, moist beds in the garden. Height and spread: 30cm (12?).
More info
    • 36 plug plants

    • Despatch: By end of May 2015
    •  
    • £11.99
    • 72 plug plants

    • Despatch: By end of May 2015
    •  
    • £16.99

Chrysanthemum 'Decorative Mixed'

Tall stems bear wide blooms that are perfect for long-lasting flower arrangements. Savour the colour of these magnificent half hardy chrysanthemums in your autumn garden when summer bedding plants have faded away. This vibrant collection will reward you with dazzling blooms right through until the frosts. Disbudding the stems will produce fewer, but larger blooms, or let them grow naturally for a mass of smaller flowers. Height: 90cm (36?). Spread: 45cm (18?).


Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.


Useful links:

Companion Planting

More info
    • 5 Postiplug plants

    • Despatch: By end of May 2015
    •  
    • £9.99

Dicentra spectablis (Large Plant)

Lamprocapnos spectabilis, Bleeding Heart, Dutchman's Breeches, Lyre Flower

  • New in 2015
Charming rose-pink, heart shaped flowers dangle enticingly from elegant arching stems, giving this plant its common name of Bleeding Heart. This beautiful spring flowering perennial is one of the earliest to bloom each year, often continuing into early summer. The finely-cut foliage forms attractive clumps that increase year after year, at a slow but steady rate. This graceful hardy perennial enjoys a reliably moist soil, making it ideal for damp woodland areas as well as cottage garden borders. Dicentra spectabilis holds an RHS AGM for its superb garden performance and makes a worthy addition to any Spring garden. Height: 120cm (48"). Spread: 45cm (18").
More info
    • 1 x 1 litre potted dicentra plant

    • Despatch: By end of May 2015
    •  
    • £9.99
    • 2 x 1 litre potted dicentra plants

    • Despatch: By end of May 2015
    •  
    • £17.99