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 68 products.
 

Shasta Daisy 'Goldfinch' (Large Plant)

Leucanthemum × superbum, Chrysanthemum maximum, Shasta Daisy

This exciting modern cultivar is the most yellow Leucanthemum to date. The semi double blooms of Shasta Daisy 'Goldfinch' open a bright lemon colour that slowly fades to pale ivory as the blooms age. This compact variety is well branched and bushy, flowering for weeks from late spring onwards and attracting bees and butterflies to its nectar rich blooms. This reliable hardy perennial is undemanding and easy to grow in borders and wildlife areas. It also makes a lovely cut flower. Height and spread: 60cm (24").

 

Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
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    • 1 x 2 litre potted leucanthemum plant

    • Despatch: Within 28 days
    •  
    • £12.99
    • 2 x 2 litre potted leucanthemum plants

    • Despatch: Within 28 days
    •  
    • £19.99

Verbena bonariensis 'Lollipop' (Large Plant)

 Customer Rating

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").

 

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

    • Despatch:
    •  
    • £7.99
    • Out of stock
    • 2 x 1 litre potted verbena plants

    • Despatch:
    • SAVE *£2.99  
    • £15.98 £12.99
    • Out of stock

Foxglove 'Milk Chocolate' (Large Plant)

Digitalis parviflora

Rich chocolate coloured flowers tightly fill the slender flower spikes of this superb Foxglove. Digitalis parviflora 'Milk Chocolate' is a rarely seen variety with glossy foliage that complements the unusual blooms. Native to Spain, this Foxglove is surprising hardy and enjoys a lightly shaded position in the garden. The nectar rich blooms prove particularly attractive to bees, making this a useful addition to wildlife areas. Pair it with white flowered Digitalis for a particularly elegant contrast. Height: 60cm (24"). Spread: 30cm (12").

 

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

    • Despatch: Within 28 days
    •  
    • £9.99
    • 2 x 1 litre potted digitalis plants

    • Despatch: Within 28 days
    •  
    • £14.99

Agapanthus 'Twister'

African Blue Lily

  • Stunning Bicolour flowers
  • Perfect for striking patio displays
  • Mid to Late Summer Flowering
Here's a plant that will stand out from the crowd in your garden - the first ever deciduous bicolour Agapanthus. This African lily is robust, and truly hardy in the UK meaning it's perfect in the garden border as well as in a patio container. The flowers of Agapanthus 'Twister' are absolutely glorious, with crystal white flutes turning inky blue at the tips. The huge globes of colour appear from mid to late summer, hosted on strong, sturdy stems that need no staking. Height: 60cm (24"). Spread: 50cm (20").

Why not add a patio pot to your order? - perfect for planting up your Agapanthus plants!
More info
    • 1 x 9cm potted agapanthus plant

    • Despatch:
    •  
    • £13.99
    • Out of stock
    • 2 x 9cm potted agapanthus plants

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

Nepeta racemosa Walker's Low (Large Plant)

 

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

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

    • Despatch:
    •  
    • £14.99
    • Out of stock

Coreopsis 'Full Moon' (Large Plant)

Large, buttery-yellow daisy flowers appear above a low mound of finely cut foliage from July to September. Instead of setting seed, Coreopsis 'Full Moon' puts all of its energy into flowering over a long period, so you can be sure of a great display throughout the summer. This easy to grow, hardy perennial forms well branched plants that will happily fill gaps in sunny borders or patio containers. A good cut flower and a great addition to wildlife areas for its nectar rich blooms. Height and spread: 60cm (24").

 

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

    • Despatch: Within 28 days
    •  
    • £7.99
    • 2 x 1 litre potted coreopsis plants

    • Despatch: Within 28 days
    •  
    • £12.99

Lavender 'Hidcote'

Lavandula angustifolia, English Lavender

With its compact habit and dark purple flower spikes, this must be one of the nation's best known varieties of English lavender. The fragrant stems of Lavandula 'Hidcote' are ideal for cutting or drying, and the nectar-rich flowers are particularly attractive to bees. Lavender makes an excellent low hedge or path edging where the perfume can be appreciated as you brush past the aromatic evergreen foliage. Height: 60cm (24"). Spread: 75cm (30").

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

More info
    • 6 lavander plug plants

    • Despatch:
    •  
    • £5.99
    • Out of stock

Agapanthus 'Flower of Love'

African Blue Lily

  • The bluest agapanthus blooms
  • Lush evergreen foliage
  • Thrives on neglect!

The perfect African lily for UK gardens! The deep blue florets of Agapanthus 'Flower of Love' are some of the darkest in the genus. Set above lush, strappy evergreen foliage, the exotic blooms make a real statement in sunny borders and patio container displays, returning each summer and getting better every year. Hardier than most other modern introductions, Agapanthus 'Flower of Love' requires little upkeep, performing well on the poorest of soils, and in the confines of a patio pot, where good drainage is provided. There's no need for regular feeding or cutting back, simply apply a balanced feed each spring and cut back spent flower stalks in autumn. Foliage stays green year-round, offering valuable winter ground cover. Height: 60cm (24"). Spread: 60cm (24").
More info
    • 1 x 9cm potted agapanthus plant

    • Despatch: By end of October 2016
    • SAVE £5  
    • £13.99 £8.99
    • 2 x 9cm potted agapanthus plants

    • Despatch: By end of October 2016
    • SAVE £5  
    • £19.99 £14.99

Dianthus 'Ever-blooming Mixed' (Hardy)

Carnation

Strong upright stems carry large ruffled blooms in a vibrant mix of red, orange, yellow and pink carnations. These hardy perennial dianthus are cottage garden essentials. The fragrant carnation flowers are excellent for cutting for a bright display indoors. Perfectly proportioned for the front of sunny borders where their mounds of silvery green foliage remain evergreen throughout the year. Height: 60cm (24"). Spread: 40cm (16").

 

Culinary note: Dianthus flowers are edible.

Culinary note: Use the clove like tasting petals for adding to cakes, either for flavour or decorating, suitable for soups, salads and sauces too. For more details about edible flowers click here.

More info
    • 6 dianthus plug plants

    • Despatch: By end of October 2016
    •  
    • £5.99
    • 72 dianthus plug plants

    • Despatch: By end of October 2016
    • Double up 36 to 72 for £5 extra  
    • £15.99

Alstroemeria 'Butterfly Hybrids'

Peruvian Lily

  • T&M exclusive
An old strain of Peruvian lilies called the 'Ligtu Hybrids' included some great purples, but over the years these got lost. Now only the pinks and purples have been selected to create this eye-catching mix. One of the easiest cut flowers to grow and definitely one of the most impressive. Height and spread: 60cm (24").
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    • 3 alstroemeria Postiplug plants

    • Despatch: By end of May 2017
    •  
    • £9.99
    • 6 alstroemeria Postiplug plants

    • Despatch: By end of May 2017
    • SAVE *£4.99  
    • £19.98 £14.99

Nepeta nervosa 'Pink Candy' (Large Plant)

This compact variety of Catmint makes a pretty feature for the front of borders, cut flower gardens and wildlife areas. Upright spikes of lavender-pink flowers appear from June to September above a mound of grey-green foliage. Like all Catmints, Nepeta nervosa 'Pink Candy' is a magnet for bees and the aromatic foliage drives cats to distraction! With its neat, bushy habit, this cultivar can easily be grown in patio containers, needing little attention throughout the season. Height: 60cm (24"). Spread: 30cm (12").

 

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

    • Despatch: Within 28 days
    •  
    • £9.99
    • 2 x 1 litre potted nepeta plants

    • Despatch: Within 28 days
    •  
    • £14.99