Silvery Flower Bracts
Produces distinctive spiky silver-white bracts surrounding unusual cone-shaped flower heads.
Estimated Delivery:Nov 22 - Nov 26
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Miss Willmott's Ghost, scientifically known as Eryngium giganteum, is an ornamental sea holly admired for its striking silvery-white spiky bracts and blue-green flower heads. This biennial or short-lived perennial adds unique texture to flower borders, cottage gardens, and wildlife landscapes. It grows best in full sunlight and well-drained soil.
Produces distinctive spiky silver-white bracts surrounding unusual cone-shaped flower heads.
Develops small blue-green flowers that create an attractive contrast with silvery foliage.
Features upright flowering stems and spiny foliage that add structure to garden landscapes.
Its flowers provide a useful nectar and pollen source for bees and other beneficial insects.
| Scientific Name | Eryngium giganteum |
| Common Name | Miss Willmott's Ghost; Giant Sea Holly |
| Plant Family | Apiaceae |
| Seed Type | Ornamental Flower Seeds |
| Growth Habit | Biennial or short-lived perennial |
| Flower Color | Blue-green flowers with silvery-white bracts |
| USDA Hardiness Zones | 4–7 |
| Planting Season | Spring or autumn |
| Seed Starting | Surface sow or lightly cover with vermiculite; cold stratification may improve germination |
| Germination Time | Approximately 6–10 weeks or longer, depending on conditions |
| Germination Temperature | Approximately 18–22°C (64–72°F) during the warm phase |
| Sunlight | Full Sun |
| Soil Requirements | Well-drained, sandy or loamy soil |
| Watering | Moderate; avoid waterlogged soil |
| Mature Plant Size | Approximately 2–4 feet tall |
| Plant Spacing | Approximately 12 inches apart |
Miss Willmott's Ghost brings dramatic silver-white bracts, unusual flower heads, and architectural beauty to ornamental gardens. Its attractive blooms are also suitable for fresh and dried floral arrangements, making it an interesting choice for flower borders and wildlife-friendly landscapes.
Find helpful answers about Miss Willmott's Ghost seed germination, flowering, and garden uses.
Cold stratification can help improve germination. A commonly used method involves keeping the seeds warm at approximately 18–22°C for 2–4 weeks, followed by a refrigerated period at approximately 3–5°C for 4–6 weeks. Return them to suitable germination conditions afterward. Germination can be slow and irregular.
Miss Willmott's Ghost typically develops a leafy basal rosette during its first growing season and produces tall flowering stems during the following season. Its unusual blue-green flower heads and silvery bracts generally appear in summer.
Yes. Its stiff stems, distinctive spiky flower heads, and silvery bracts make it an excellent choice for dried flower arrangements. Cut the flower stems when the heads are well developed and dry them in a cool, dry, well-ventilated location.