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 5 products.

Dianthus 'Scents of Summer Pink Peony'

Pink, Carnation

  • 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: 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
    • 5 dianthus Postiplug plants

    • Despatch: By end of July 2016
    • £12.99
    • 10 dianthus Postiplug plants

    • Despatch: By end of July 2016
    • SAVE *£7.99  
    • £25.98 £17.99

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 (55"). 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 alstroemeria jumbo plug plants

    • Despatch: By end of July 2016
    • £24.99
    • 3 alstroemeria jumbo plug plants + 1 Tower Pot pack

    • Despatch: By end of July 2016
    • SAVE *£9.99  
    • £44.98 £34.99
    • 6 alstroemeria jumbo plug plants

    • Despatch: By end of July 2016
    • SAVE *£9.99  
    • £49.98 £39.99

Chrysanthemum 'Hardy Patio Mixed'

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 chrysanthemum Postiplug plants - 1 of each colour

    • Despatch: By end of July 2016
    • £9.99

Armeria 'Mixed'

Sea Pink, Thrift

Dense cushions of bright green foliage produce spherical flower heads set atop sturdy upright stems. Flowering the whole summer long, the colour range is glorious, from shocking pink through cerise, red, lilac and palest pink. Undemanding and easy to grow, these appealing little perennials are well suited to poorer soils and coastal conditions with a toughness that belies their beauty. Height and spread: 30cm (12"). More info
    • 6 armeria plug plants

    • Despatch: By end of August 2016
    • £5.99

Rose Lily Grass


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 September 2016
    • £14.99
    • 3 Rose Lily Grass jumbo plug plants

    • Despatch: By end of September 2016
    • £19.99