Thompson & Morgan

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Hardy Annual Seeds

Hardy annuals can be sown directly into their flowering positions in the spring and will tolerate a certain amount of cold. Well-known flowers such as sweet peas, poppies, stocks and sunflowers fall under this category, as do some of the more unusual flowers - gomphocarpus & ratibida for example.You may also like to view our range of half-hardy annual seeds which can be sown in early spring.

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Eryngium leavenworthii

Sea Holly, Leavenworth Eryngo

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An attractive annual originating from the North American prairies. This species has the unusual characteristic unlike other Eryngiums, to flower quickly from seed in the first year. Each plant will produce spectacular spiky glaucus foliage which changes to a rich purple colour on the cones and bracts, followed by reddish-purple tinge in the autumn. Ideal for adding structure to annual borders, as well as making a decorative long lasting cut flower. Height 50-90cm (20-36in)
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    • 1 packet (20 seeds)

    • Despatch: Within 1 days
    • £2.99