Eryngium pandanifolium
Giant Sea Holly
| Family |
| Apiaceae |
| Genus |
| Eryngium |
| Species |
| pandanifolium |
| Category |
| Perennials |
| Pronunciation |
| USDA Hardiness Zone |
| 8b - 9a |
| Canadian Hardiness Zone |
| 8b |
| RHS Hardiness Zone |
| H4 |
| Temperature (°C) |
| -10 to -5 |
| Temperature (°F) |
| 14 - 23 |
| Height |
| 3 m |
| Spread |
| 1 - 2 m |
| General Description |
| Dense clumps of spiny leaves surround tall stems with large clusters of small pale flowers. |
| Landscape |
| Flower border, flower bed, single specimen. |
| Cultivation |
| Grow in moist, well-draining, fertile soil under full sunlight. |
| Shape |
| Bushy. |
| Growth |
| Fast |
| Pests |
| Susceptible to slugs, snails, Phytophthora root rot, and powdery mildew. |
| Notable Specimens |
| Trebah Gardens, Mawnan Smith, Nr Falmouth, Cornwall. |
| Propagation |
| Propagate by root cuttings, division, or seeds sown in containers. |