Eryngium leavenworthiiSea Holly, Leavenworth Eryngo
Hardy Annual
What is Hardy Annual?
A plant that completes its entire life cycle (growth, reproduction, death) in one season.
Capable of withstanding outdoor winter temperatures down to -15C.
A plant that completes its entire life cycle (growth, reproduction, death) in one season.
Capable of withstanding outdoor winter temperatures down to -15C.
Flowers quickly from seed in the first year
Spectacular, spiky, glaucus foliage
Ideal for adding structure to annual borders
A decorative long lasting cut flower
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Height Up to 90cm (35.4in)
Spread Up to 30cm (11.8in)
Hardy Annual
cottage gardenswildlife gardenscut flower gardencoastal garden
Full sun
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Sowing Months Flowering Months
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Description
Sowing
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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) (24018)
Sow February to April or September for overwintering. Sow seed on the surface of a good, free-draining, damp, seed compost and cover with a fine sprinkling of compost or vermiculite. Seal container inside a polythene bag or place in a propagator at 18-21C (65-70F) until after germination which usually takes 5-10 days. Do not exclude light as this helps germination.
Delivery
Transplant when large enough to handle into 7.5cm (3in) pots. Gradually acclimatise plants to cooler conditions for a few weeks before planting out after all risk of frost, 45cm (18in) apart. Overwinter September sowings in a coldframe and plant out the following spring.
Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.
Orders for packets of seed incur a delivery charge of £2.99.
Orders which include any other products will incur a delivery charge of £4.99.
Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 will apply - regardless of the number of items ordered.
Large items may incur a higher delivery charge - this will be displayed in your shopping basket.
Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.
For more information on how we send your plants please visit our Helpful Guide on plant sizes.
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