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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 305 products.
 

Geranium 'Jackpot Mixed' F1 Hybrid (Garden Ready)

Pelargonium, Zonal Geranium, Zonal Pelargonium

 Customer Rating
  • The fast-track to a hassle-free garden - just plant, water and enjoy!
  • Quality plants delivered to your door, hardened off and ready to plant out
  • Fully-grown, super-robust, healthy plants

Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.


These weather tolerant, F1 hybrid pelargoniums have more than enough vigour to ensure a spectacular, free flowering display throughout summer. Geranium 'Jackpot Mixed' produce masses of colourful single blooms on neat compact plants. Perfect for filling beds, borders and patio containers. Height: 40cm (16"). Spread: 35cm (14").


Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 30 geranium garden ready plants

    • Despatch:
    • Immediate despatch!  
    • £14.99 £7.99
    • Out of stock

Perennial 'Best Value' Collection

 Customer Rating

Fill your beds and borders with this bargain collection of herbaceous perennials. Perennial plants bloom year after year, and many can also be cut and brought into the house for beautiful flower arrangements. Height: Up to 1m (39"). Spread: 45cm (18").

  • Collection includes;

  • Lavender 'Munstead' - This neat, compact variety of English lavender bears masses of dark purple-blue flower spikes. Height: 45cm (18"). Spread: 60cm (24").
  • Digitalis 'Dalmation Mixed' - Well branched, compact, dwarf plants. Height: 50cm (20"). Spread: 40cm (16").
  • Echinacea 'Primadonna' - Beautiful pink daisy flowers with petals that radiate outwards instead of downwards. Height: 85cm (33"). Spread: 45cm (18").
  • Coreopsis 'Presto' - Neat, compact plants are smothered in golden-yellow, semi-double flowers all summer long. Height and spread: 45cm (18").
  • Verbena Bonariensis - Tightly clustered florets form glowing lavender flower heads that float atop stiffly upright, branching stems. Height: 200cm (78"). Spread: 45cm (18").
  • Scabiosa 'Blue Jeans' - Blue pincushion flowers attract bees and butterflies throughout summer. Height and spread: 45cm (18").
  • Aquilegia 'Swan' Mixed - An abundance of large flowers on upright, multi-branched stems Height: 30cm (12"). Spread: 25cm (10").
  • Geum 'Blazing Sunset' - Fully double, large scarlet blooms are borne over a long period in summer. Height and spread: 60cm (24").
  • Carnation 'Ever-blooming Mixed' (Hardy) - Richly fragrant blooms that are ideal for cutting. Height and spread: 30cm (12").
  • Armeria 'Mixed' - Long flowering plants with unusual ball shaped flower heads on thin wiry stems. Height: 50cm (20"). Spread: 30cm (12").
  • Delphinium 'Pacific Giants' - Excellent for adding structure and presence to the back of borders. Height: 150cm (60"). Spread: 75cm (30").
  • Leucanthemum x superbum 'White Knight' - Pure white single flowers are produced in constant supply throughout summer.
More info
    • 72 perennial plug plants - 6 of each variety

    • Despatch: By end of August 2015
    • Save £51.89  
    • £71.88 £19.99

Geranium 'Best Red' F1 Hybrid (Garden Ready)

Pelargonium, Zonal Geranium, Zonal Pelargonium

  • The fast-track to a hassle-free garden - just plant, water and enjoy!
  • Quality plants delivered to your door, hardened off and ready to plant out
  • Fully-grown, super-robust, healthy plants
Our garden ready plants are selected for garden performance, straight from the nursery. We send them to you 'green' ahead of flowering (but please note some varieties may show a few blooms), which means plants will establish quickly and all their energy goes into producing better roots, so they produce more flowers throughout the season.

This exceptional variety, Geranium F1 'Best Red' outperformed all others in our trials. The uniform, well branched plants become smothered in large, shapely scarlet flowers that retain their form, without shattering as they fade. These vigorous pelargonium plants are guaranteed to create a top performance in beds, borders and containers. Height: 45cm (18"). Spread: 35cm (14").
Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
More info
    • 30 geranium garden ready plants

    • Despatch: By end of July 2015
    • Immediate despatch!  
    • £14.99 £7.99

Rose Lily Grass

Rhodohypoxis

Dainty, jasmine-like flowers in two shades of pink erupt in profusion above short clumps of lance-shaped foliage in late spring, followed by flushes of flowers throughout the summer. Giving a long-lasting display throughout the summer months, these starry gems also have a delicate sweet fragrance. Each Rose Lily Grass plug plant contains more than one bulblet for prolific flowering in borders, rock gardens and containers. Although fully hardy, Rhodohypoxis will need protection from winter wet. Height and spread: 15cm (6"). More info
    • 1 Rose Lily Grass jumbo plug plant

    • Despatch: By end of July 2015
    •  
    • £14.99
    • 3 Rose Lily Grass jumbo plug plants

    • Despatch: By end of July 2015
    •  
    • £19.99

Rudbeckia 'Summerina Collection'

Coneflower, Black-eyed Susan

  • New in 2015
  • T&M Exclusive
  • New perennial rudbeckia for borders

Rudbeckia 'Summerina' Collection is exclusive to Thompson & Morgan, a near impossible breeding breakthrough - the crossing of an annual rudbeckia and a perennial echinacea! The result: tough, hardy perennial rudbeckias that return year on year to offer the stronger and longer flowering habit of annual varieties. This three colour mix is ideal for extending the life of your summer border - the plants go on to provide much needed autumn colour right up to the first hard frosts. Height and spread: 60cm (24").

More info
    • 3 rudbeckia jumbo plug plants

    • Despatch: By end of September 2015
    •  
    • £12.99
    • 6 rudbeckia jumbo plug plants

    • Despatch: By end of September 2015
    •  
    • £19.99

Verbena bonariensis 'Lollipop' (Large Plant)

Glandularia, Verbena patagonica

  • New in 2015

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
    • 1 x 1 litre potted verbena plant

    • Despatch: By end of July 2015
    •  
    • £7.99
    • 2 x 1 litre potted verbena plants

    • Despatch: By end of July 2015
    • Save £2.99  
    • £12.99

Verbena bonariensis

Glandularia, Verbena patagonica

Tightly clustered florets form glowing lavender flower heads that float atop stiffly upright, branching stems. The long lasting blooms of Verbena bonariensis attract clouds of bees and butterflies. This perennial verbena has enjoyed a resurgence in popularity in recent years, associating beautifully with grasses for a tranquil planting scheme, or adding a touch of architectural style to the back of herbaceous borders. This elegant perennial is at its most effective when planted in large swathes. Height: 200cm (79"). Spread: 45cm (18").
More info
    • 6 verbena plug plants

    • Despatch: By end of August 2015
    •  
    • £5.99
    • 12 verbena plug plants

    • Despatch:
    •  
    • £7.99
    • Out of stock

Dianthus 'Scents of Summer Pink Peony'

Carnation, Pink

  • New in 2015
  • T&M Exclusive
  • We've put the scent back into garden carnations!

Part of the 'Scents of Summer' series, Dianthus 'Pink Peony' is the pick of the bunch. The crested magenta blooms have a deep, rich fragrance, just like the old fashioned varieties, but with modern vigour and strong garden performance which continues throughout the season. Look forward to an abundance of strong stemmed blooms from this hardy garden pink, which make superb cut flowers. Perfect for edging pathways and borders or brightening up patio containers with long lasting colour. Height and spread: 30cm (12").


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

More info
    • 5 dianthus Postiplug plants

    • Despatch: By end of July 2015
    • Save £5  
    • £12.99 £7.99
    • 10 dianthus Postiplug plants

    • Despatch: By end of July 2015
    • Save £6  
    • £17.99 £11.99

Osteospermum 'Blue Eyed Beauty'

African Daisy, Cape Daisy

  • The most rewarding plant for the least effort

Buttery yellow blooms with a contrasting blue eye smother this stocky little African Daisy from June to September. This early flowering variety has a compact, branching habit that is perfect for filling beds and containers, or edging sunny borders. Like all Cape Daisies, Osteospermum 'Blue Eyed Beauty' thrives in hot and sunny conditions, performing beautifully, even in difficult dry soils. Height and spread: 40cm (16").

More info
    • 5 osteospermum Postiplug plants

    • Despatch: By end of March 2016
    •  
    • £9.99
    • 10 osteospermum Postiplug plants

    • Despatch: By end of March 2016
    • Save £4.99  
    • £19.98 £14.99

Giant Geranium Collection

Pelargonium

  • The biggest geraniums you'll ever find

Enormous heads of bloom with exceptional weather resistance make these giant geraniums stand out from the rest! Raised from cuttings, these plants have increased vigour and abundant flowers that persist throughout summer if deadheaded regularly. Fantastic for creating dramatic patio displays or filling gaps in borders. Height: 60cm (24"). Spread: 50cm (20").


Although technically perennial, Pelargoniums are only half hardy and therefore normally treated as annuals in the UK. However, with care, they may be overwintered in a frost free greenhouse.
  • Collection comprises:
  • Geranium 'Octavia Hill' - Bold scarlet
  • Geranium 'Salmon Princess' - Delicate candy pink.
  • Geranium 'Sassa' - Dark pink.
  • Geranium 'Flower Fairy Berry' - Rich cerise pink.
  • Geranium 'Maestro Salmon' - Dark pink.
More info
    • 5 geranium jumbo plug plants - 1 of each variety

    • Despatch: By end of March 2016
    •  
    • £9.99
    • 15 geranium jumbo plug plants - 3 of each variety

    • Despatch: By end of March 2016
    •  
    • £19.99
    • 30 geranium jumbo plug plants

    • Despatch: By end of March 2016
    • Save £53.95  
    • £83.94 £29.99
    • 100 geranium jumbo plug plants - 20 of each variety

    • Despatch: By end of March 2016
    • Save £129.81  
    • £199.80 £69.99

Dianthus 'Doris'

Carnation, Pink

This well known RHS AGM variety is one of the longest flowering Pinks you'll find. An abundance of double pink flowers with deep pink centres are produced all summer long, above mats of silvery green foliage. With a rich, sweet fragrance, Dianthus 'Doris makes a delightful cut flower that will fill your home with fragrance. This compact hardy perennial is perfect for alpine gardens and rockeries or planted through the front of beds and borders. Height and spread: 25cm (10").


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

More info
    • 5 dianthus Postiplug plants

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

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

Alstroemeria 'Everest Collection'

Peruvian Tree Lily

Create a floral sculpture on your patio with these incredible Peruvian Lilies. Our Alstroemeria ‘Everest Collection’ combines the best tall varieties that will knit together and keep growing skywards. Support them with our Tower Pot™ for the most impressive display. With so many long-stemmed blooms, you will never be short of cut flowers to add to magnificent bouquets. Height: 140cm (71"). Spread: 75cm (30"). The collection includes one each of the following - 'Canary Yellow', 'Blue Diamond' and 'Pink Punch'.

Useful links:

Press Release: Pick a bouquet a week - and the flowers still keep coming!

More info
    • 3 x 5cm alstroemeria potted plants

    • Despatch: By end of April 2016
    •  
    • £19.99
    • 3 x 5cm alstroemeria potted plants + 1 Tower Pot pack

    • Despatch: By end of April 2016
    •  
    • £39.98
    • 6 x 5cm alstroemeria potted plants

    • Despatch: By end of April 2016
    •  
    • £34.99