Silvery-Blue Flower Heads
Produces distinctive cone-shaped flower heads surrounded by silvery bracts that create an unusual garden display.
Estimated Delivery:Nov 23 - Nov 27
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Eryngium giganteum, commonly known as Miss Willmott's Ghost, is a striking ornamental perennial known for its silvery-blue flower heads, spiny bracts, and distinctive architectural appearance. It adds texture and contrast to flower borders, cottage gardens, and naturalistic landscapes. This plant attracts pollinating insects and is also valued for its dried floral arrangements. Eryngium giganteum grows best in sunny locations with well-drained soil and is suitable for gardeners seeking unusual ornamental flowers.
Produces distinctive cone-shaped flower heads surrounded by silvery bracts that create an unusual garden display.
Features stiff stems and spiny foliage that add structure, height, and texture to ornamental planting areas.
The flowers provide a source of nectar for bees and other visiting pollinating insects.
Its distinctive flower heads can add texture and character to dried floral arrangements.
| Scientific Name | Eryngium giganteum |
| Common Name | Miss Willmott's Ghost; Giant Sea Holly |
| Plant Family | Apiaceae |
| Product Type | Flower Seeds |
| Plant Type | Short-lived perennial or biennial, depending on growing conditions |
| Flower Color | Silvery-blue to blue-green |
| Blooming Season | Summer, depending on climate and planting time |
| Sunlight Requirements | Full sun |
| Soil Requirements | Well-drained, moderately fertile soil |
| Watering | Moderate watering during establishment; avoid waterlogged soil |
| Planting Season | Spring or autumn, depending on climate and seed instructions |
| Germination Time | Variable; may be slow or irregular |
| Germination Temperature | Follow supplier instructions; cool stratification may improve germination |
| Growth Habit | Upright, branching flowering stems |
| Mature Plant Height | Approximately 3–5 feet, depending on growing conditions |
| Growing Location | Flower borders, cottage gardens, gravel gardens, and pollinator gardens |
| Propagation | Seeds |
Eryngium giganteum brings sculptural form, silvery-blue flower heads, and natural garden interest to sunny landscapes. Its distinctive appearance suits cottage gardens, mixed borders, and pollinator-friendly planting schemes. With well-drained soil, adequate sunlight, and patience during germination, this unusual ornamental plant can become a memorable feature in the garden.
Discover useful information about Eryngium giganteum seed germination, flowering time, and garden care.
Sow Eryngium giganteum seeds in a well-drained seed-starting mix and follow the supplier's sowing instructions. Germination can be slow or irregular, and some seed batches benefit from a period of cool, moist stratification. Keep the medium appropriately moist without waterlogging it.
Eryngium giganteum generally flowers during summer. Depending on when it is sown and how it develops, flowering may occur in its second growing season. Sunny conditions and well-drained soil support healthy growth and flowering.
Eryngium giganteum is often a short-lived perennial or biennial rather than a reliably long-lived perennial. Mature plants may self-seed, allowing new plants to appear in subsequent seasons. Allow some flower heads to produce seeds if you want to encourage natural renewal in the garden.