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 3 products.

Nepeta transcaucasica 'Blue Infinity'


Tall wands of violet-blue flowers in seemingly infinate quantity over a long period. With its characteristic aromatic fragrance it is extremely effective in the border, long-lived, easily grown and very reliable.

* Seed came to T&M under this name which is yet to be verified.

More info
    • 1 packet (45 nepeta seeds)

    • Despatch: By end of July 2016
    • £0.69

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 knautia macedonica seeds)

    • Despatch: By end of October 2015
    • £3.99

Knautia macedonica 'Melton Pastels'

Macedonian Scabious, Scabiosa rumelica

Glorious scabious-like, 4cm (1½in) pin cushion blooms in the softer hues: blue, mauve, pink, rose, salmon and crimson. Excellent back of border plant producing masses of flowers in two flushes (provided you cut down spent bloom), through to autumn frosts. Suitable for most types of soil. Flowers summer to early autumn. Height 90-120cm (3-4ft).
More info
    • 1 packet (30 knautia macedonica seeds)

    • Despatch: By end of January 2016
    • £3.99