 | Heritage Perennial Profile |
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| Plant Number: 1.205.100 | USDA Zone: 2 - 9 |
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 | Eryngium amethystinum |
 | Common name : Sea Holly |
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| Amethyst Sea Holly features open umbels of prickly steel-blue flowers, which are a favourite for cutting, fresh or dried. This is a very hardy species, small flowered but with superb colour in the garden, especially nice contrasting with yellow or gold neighbours. Compact in size, this may be useful towards the border edge. Plants spread to form a small patch. Easily divided in early spring. Tolerant of hot, dry sites, and soils high in salts. For drying, pick stems just as the flower clusters open fully, and hang upside down to dry in a warm, dark place. Attractive to butterflies.
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Conditions |
Appearance |
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Sun Exposure Full Sun
Soil Type Normal Sandy Clay
Soil pH Neutral Alkaline Acid
Soil Moisture Average Dry
Care Level Easy
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Flower Colour Deep Blue
Blooming Time Mid Summer Late Summer
Foliage Color Deep Green
Plant Uses & Characteristics Accent: Good Texture/Form Attracts Butterflies Border Cut Flower Dried Flower Drought Tolerant Rabbit Resistant Massed
Flower Head Size Large
Height 40-50 cm 16-20 inches
Spread 30-45 cm 12-18 inches
Foot Traffic None
Growth Rate Medium
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What others say about this plant...
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Amethyst sea holly is especially popular with northern growers because it's extremely cold-hardy. It also succeeds better in hot-summer gardens than most other sea hollies. From midsummer to late summer, the plants produce branching stems of small metallic blue flowers with very long, pointed bracts.; Larry Hodgson, Perennials for Every Purpose |
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