Metallic blue bracts and cones turn the whole plant a vivid silvery-blue. Otherworldly and completely drought-proof.
Quick Reference
- Bloom Season
- Jul to Sep
- USDA Zones
- 4-8
- Sun
- Full Sun
- Water
- Low - drought tolerant
- Mature Height
- 2-3'
- Bloom Colors
- BluePurple
△ Deer Resistant✿ Pollinator Friendly✂ Cut Flower✦ Low Maintenance
Read the full Sea Holly growing guide →
Companion plants, planting tips, FAQ, and more
About This Name
Eryngium amethystinum is the scientific name used by botanists, nurseries, and seed catalogs to identify Sea Holly unambiguously. The genus Eryngium places it within a specific plant family, and using the botanical name avoids the confusion that comes with regional common names. If you're shopping for Sea Holly, looking up plant care details, or comparing varieties, searching by Eryngium amethystinum will give you the most precise results.