Thompson & Morgan

Important delivery notice
The products on this site are only delivered to UK addresses. If you require delivery to another country please visit one of our other sites below.

Refine Results

Refine by..

Email Newsletter

Sign up to our newsletter

Perennial & Biennial Seeds


Biennials live for 2 years, whereas perennials live for longer. As a general rule, biennial and perennial seeds should be sown in spring, but some can be sown in autumn as well. Many varieties will self-seed after flowering, giving you even more plants!



We have found 147 products.
 

Lisianthius nigrescens

Flower of Death

This rare exotic plant is little known outside its native homeland of Mexico. A choice species, and seldom offered, Lisianthius nigrescens bears long, tubular flowers of the darkest black, on slender, towering stems. This extraordinary perennial makes a dramatic specimen plant and a fascinating talking point that will create interest and wonder at the back of borders. Lisianthius nigrescens is half-hardy but will require winter protection in a frost free environment during the winter months. Height: 180cm (71"). Spread: 50cm (20"). More info
    • 1 packet (20 seeds)

    • Despatch: Within 1 days
    •  
    • £3.29

Anemone japonica (Mixed)

Japanese Anemone, Anemone x hybrida, Windflower

Elegant, late summer flowering perennials, producing their gorgeous, well shaped blooms mainly in rose to pink shades for many weeks and providing the perfect end to the summer. Happy in sun or light shade. Flowers late summer/autumn, Height: 60cm-1.2m (2-4-ft). More info
    • 1 packet (30 seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Knautia macedonica

Macedonian Scabious, Scabiosa rumelica

 Customer Rating
One of the finest perennials for the border we have seen. It has a very long season of flowering lasting well into the autumn and early winter. The dense, double, pin cushion scabious like flowers are a brilliantly strong cherry red, a rare colour in border flowers. Makes a large, neat, rounded bushy plant producing many flowers which are excellent for cutting. Easy to grow and undemanding. Flowers summer/autumn. Height 90-120cm (3-4ft).
More info
    • 1 packet (50 seeds)

    • Despatch: Within 1 days
    •  
    • £3.99

Aster 'Composition'

Aster novi-belgii, Aster novae-angliae, Michaelmas Daisy, New England Aster

 Customer Rating
Michaelmas Daisies - Bright colours of Aster novi-belgi and novae-angliae composed for a contrasting rich colour range of long stemmed autumnal flowers for cutting.
More info
    • 1 packet (60 seeds)

    • Despatch: Within 1 days
    •  
    • £2.99

Lobelia cardinalis 'Queen Victoria'

Cardinal Flower, Lobelia fulgens, Lobelia splendens

Tall spikes of deep maroon foliage topped by glowing scarlet blooms bring a welcome splash of late summer colour, when many flowers have already faded. This exotic looking, short lived perennial is ideal for filling gaps in damp borders, and looks spectacular planted beside ponds and streams. Height: 90cm (36”). Spread: 30cm (12”).
More info
    • 1 packet (200 seeds)

    • Despatch:
    •  
    • £2.89
    • Out of stock

Pansy 'Water Colours Mixed' F1 Hybrid

Viola x wittrockiana

Create a masterpiece with this fine mixture of the most delicate shades which has been an unqualified success wherever T&M have shown it. The colours work together in a way that brings raptuous comments wherever it is seen and it has performed well under adverse weather conditions both for colour, winter/ spring and summer flowering, for colour harmony and usefulness whether in containers, hanging baskets or bedding. Height: 15-20cm (6-8in).

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

More info
    • 1 packet (30 seeds)

    • Despatch: Within 1 days
    •  
    • £1.99

Scabious 'Beaujolais Bonnets'

Scabiosa, Pincushion Flower

An attractive first year flowering perennial, producing bushy plants with clusters of wiry stems clothed in unusual rich burgundy flowers with contrasting paler outer petals and white stamens. Ideal for attracting butterflies to your borders or containers. Height: 50-60cm (20-24in).
More info
    • 1 packet (50 seeds)

    • Despatch: Within 1 days
    •  
    • £3.29

Helenium autumnale 'Sunshine Hybrids'

Helen's Flower, Sneezeweed

A dazzling colour range of flowers, making a spectacular autumn display in perennial borders. Height: 60-120cm (2-4ft).
More info
    • 1 packet (300 seeds)

    • Despatch: By end of April 2015
    •  
    • £2.59

Centranthus 'Star Ruber Mixed'

Valerian, Red Valerian, Pretty Betsy

A beautiful border plant beloved by bees and butterflies. Mixture contains three colours: rose, white and maroon. Plants are lightly fragrant, long flowering and may also be used as a cut flower.
More info
    • 1 packet (100 seeds)

    • Despatch: Within 1 days
    •  
    • £0.99

Armeria pseudarmeria 'Ballerina Mixed'

Sea Pink, Large-flowered Thrift, Armeria maritima

This pretty mix of sea thrift produces pretty globe-shaped flowerheads in a lovely colour blend of red, lilac and white. The long lasting blooms smother neat evergreen cushions of foliage throughout summer, attracting bees and other insects to their nectar rich flowers. Armeria pseudarmeria 'Ballerina Mixed' flower in their first year, and return bigger and better each summer. 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: 25cm (10").
More info
    • 1 packet (20 seeds)

    • Despatch: Within 1 days
    •  
    • £3.89

Delosperma floribunda 'Stardust'

Ice Plant

 Customer Rating
The perfect plant for that hot, dry spot in your borders or rockeries. Dwarf, shiny, deep green, almost metallic-looking succulent foliage bursts into bloom from mid May. Plants are covered with spectacular lilac-purple flowers flowers with large white centres, flowering until the first frost. Loved by butterflies. Height: 10-15cm (4-6in)
More info
    • 1 packet (200 seeds)

    • Despatch: Within 1 days
    •  
    • £2.69

Salvia patens

Gentian Sage

A classic border plant, ideal for adding a cool blue drift to your planting schemes. The attractive, large blue hooded florets are borne on erect stems above toothed foliage. First year flowering, blooms throughout the summer into autumn. Height: 45-60cm (18-24in).
More info
    • 1 packet (15 seeds)

    • Despatch: Within 1 days
    •  
    • £0.99