Thompson & Morgan

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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 62 products.
 

Verbascum x hybrida 'Snow Maiden'

Mullein, Celsia

 Customer Rating

A first class garden plant! Well branched, erect spikes covered in large 4cm (1½in) pure white flowers, over a long period. An incredibly beautiful plant for the back of borders, seldom requiring support.

More info
    • 1 packet (100 verbascum seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99

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: By end of May 2016
    •  
    • £0.99

Myosotis sylvatica 'Bobo Mixed'

Forget-Me-Not

Essential spring bedding plants. Forget-me-nots are usually blue, but also found here in pink and white, and all on dwarf, compact plants! A fantastic accessory to spring beds and borders, complementing golden Daffodils and Tulips.
More info
    • 1 packet (100 myosotis seeds)

    • Despatch: By end of May 2016
    •  
    • £1.99 £0.99

Hellebore (Christmas Rose)

Helleborus niger

Surprise your friends and neighbours with an arrangement of Christmas roses for the festive season! Beautiful blooms at a time when little else is available. From seed you can have a group quite close together in a way which would cost you a great deal if you bought the plants. They flower in about three years from seed and invariably produce stronger, healthier plants.

More info
    • 1 packet (40 hellebore seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99

Cerastium tomentosum

Snow-in-summer

 Customer Rating

A low spreading rock plant with silvery leaves, topped by pure white flowers. Easy and attractive, particularly useful for quickly covering sunny banks etc. Each plant having a spread of 60cm (24in). Flowers late spring/summer.

More info
    • 1 packet (320 cerastium seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99

Poppy 'Checkers'

Papaver orientale, Oriental Poppy

First year flowering from an early sowing. Poppy Checkers is easy to raise and very rewarding with pure white silky flowers are flanked within by the deepest black cross. Use as a novel cut flower, as well as for the traditional dried seed heads. Height: 60-90cm (2-3ft).
More info
    • 1 packet (50 poppy seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99

Erigeron karvinskianus 'Profusion'

Erigeron karvinskianus, Fleabane, Mexican Fleabane

Lovely subject for hanging baskets, window boxes, patio tubs. Flowers within 3 months.
More info
    • 1 packet (200 erigeron seeds)

    • Despatch: By end of May 2016
    •  
    • £3.49

Achillea ptarmica 'Double Diamond'

Yarrow, Sneezewort

 Customer Rating
Compact bushy plants are smothered with mainly double, dazzling white pom-pom flowers. An improved selection of this fabulous first-year-flowering hardy perennial, growing to 30cm (12") in the first year and 80cm (32") in the second. Achillea 'Double Diamond' is ideal for the front and middle of borders, as ground cover or as low hedging where it will attract bees and other beneficial insects. This elegant Yarrow also makes a lovely cut or dried flower. Height: 80cm (31"). Spread: 60cm (24").
More info
    • 1 packet (80 achillea seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99

Echinacea purpurea 'Lustre Hybrids'

Coneflower

A robust, long-lived border plant with superb flowering performance and excellent weather resistance. This very attractive mixture offers shades of pink and red as well as glistening white. Excellent for borders or makes a high quality cut flower. Prefers a light, well-drained soil in full sun. Height 45-60cm (18-24in).
More info
    • 1 packet (25 echinacea seeds)

    • Despatch:
    •  
    • £0.99
    • Out of stock

Malva moschata 'Snow White'

Musk Mallow

Dwarf, compact plants, covered by masses of glistening snow white flowers. Excellent garden performance, flowering over a long period all summer. Ideal for borders or containers. Flowers in first year. Height: 30-38cm (12-15in).
More info
    • 1 packet (40 malva seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99

Arum Lily

Zantedeschia aethiopica, Calla Lily

A soothing sight by the waterside, in moist borders or large containers. These robust plants produce glossy foliage shooting like arrows from the base, then from late spring to mid-summer, the beautiful, pure white Arum Lily blooms become a sparkling attraction. Hardy with dry mulch winter protection. More info
    • 1 packet (20 arum seeds)

    • Despatch: By end of May 2016
    •  
    • £0.99