Thompson & Morgan
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Eryngium giganteum 'Miss Willmott's Ghost'

Eryngium giganteum, Sea Holly

Hardy Perennial

A highly ornate border plant with heart-shaped basal foliage from which rise stems of many decorative steel-blue cones surrounded by a collar of prickly, scalloped leaves. During the summer the foliage transforms from mid green to silvery-grey. Wonderful for dried arrangements, especially at Christmas. Plants can be short lived but often self seed before dying. Height: 90-100cm (36-40in).

Ideal For:
cottage gardens, wildlife gardens, cut flower garden, coastal garden
Flowering Period:
June, July, August
Sowing Months:
February, March, April, May, June, July
Position:
full sun
    • 1 packet (30 eryngium seeds)

    •  
    • Despatch: Within 1 days
    • £2.49
Sow in trays, pots, etc of good seed compost in a propagator or warm place to maintain an optimum temperature of 65-70F (18-20C). Surface sow and just cover with vermiculite. Do not exclude light. Sowing Time: February to July. Germination can be slow. After sowing, seal container in a polythene bag and leave at 60-65F (15-18C) for 2 weeks, then place in a refrigerator (not freezer) for 3-6 weeks. After this return to the recommended germination temperature. If germination does not occur in 6-10 weeks return to the fridge for a further 3-6 weeks. Examine regularly whilst in the fridge and remove immediately the seeds show signs of germinating.

Transplant seedlings when large enough to handle into 7.5cm (3in) pots. Grow on in a cold frame and plant out the following spring 30cm (12in) apart in full sun.

Prefers a rich, light, well drained soil.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above.

Despatch: Within 24 hours applies to orders placed online from Sunday to Thursday. Orders placed online on Friday or Saturday will be despatched on Monday. Please note that for Bank Holiday weekends, orders placed Friday to Sunday will be despatched on Tuesday.

Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.


Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.


Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

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