Eryngium maritimum (Sea Holly)
Sea Holly, Sea Eryngo, See Eryngium, Sea Holm
Highly ornamental, Eryngium maritimum (Sea Holly) is a semi-evergreen, clump-forming perennial with rosettes of waxy, spiny, blue-gray leaves adorned with white veins. In summer, the stiff stems boast thistle-like, blue flower heads adorned with collars of spiky bracts. Native to the sandy beaches of Europe, Sea Holly appreciates sandy and sunny conditions. Perfect for coastal areas and rock gardens.
- Grows in clumps of stiffly erect, branched stems up to 24-36 in. tall and wide (60-90 cm)
- Performs best in full sun in sand dunes or shingle. Drought tolerant.
- Excellent choice for gravel gardens and coastal gardens. May be planted as a single specimen or in groupings. Perfect for cut or dried flower arrangements too!
- Propagate by seed in fall
- Native to Europe
Requirements
| Hardiness |
5 - 10 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Apiaceae |
| Genus | Eryngium |
| Exposure | Full Sun |
| Season of Interest |
Summer (Early, Mid, Late) |
| Height |
2' - 3' (60cm - 90cm) |
| Spread |
2' - 3' (60cm - 90cm) |
| Spacing | 36" (90cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Sand |
| Soil pH | Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Dried Arrangements, Cut Flowers, Showy, Semi-Evergreen |
| Native Plants | United Kingdom |
| Tolerance | Drought, Deer, Salt, Dry Soil |
| Attracts | Bees, Birds, Butterflies |
| Garden Styles | Coastal Garden, Gravel and Rock Garden |
Alternative Plants to Consider
Recommended Companion Plants
Find In One of Our Guides or Gardens
ByP. Qvist,Karin de Jonge-Fotografie /Shutterstock, (c) Gerhard Bock, SucculentsandMore.com
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Requirements
| Hardiness |
5 - 10 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Apiaceae |
| Genus | Eryngium |
| Exposure | Full Sun |
| Season of Interest |
Summer (Early, Mid, Late) |
| Height |
2' - 3' (60cm - 90cm) |
| Spread |
2' - 3' (60cm - 90cm) |
| Spacing | 36" (90cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Sand |
| Soil pH | Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Dried Arrangements, Cut Flowers, Showy, Semi-Evergreen |
| Native Plants | United Kingdom |
| Tolerance | Drought, Deer, Salt, Dry Soil |
| Attracts | Bees, Birds, Butterflies |
| Garden Styles | Coastal Garden, Gravel and Rock Garden |
