Eryngium planum
Flat Sea-Holly
| Family | 
| Apiaceae | 
| Genus | 
| Eryngium | 
| Species | 
| planum | 
| Category | 
| Perennials | 
| Pronunciation | 
| USDA Hardiness Zone | 
| 5-9 | 
| Height | 
| 90 cm | 
| Spread | 
| 45 cm | 
| Habitat | 
| Central and southeast Europe to central Asia. | 
| Leaf Description | 
| Evergreen, oblong, toothed, heart shaped, dark green leaves. | 
| Flower Description | 
| Round umbels with blue flowers and blue-green bracts on bright blue stems. Seed heads are attractive, so leave on plant for the autumn garden. | 
| Propagation | 
| Sow fresh seed in containers with germination in 1-2 weeks at 65-75°F (18-23°C). |