tripartite sea holly
Eryngium tripartitum
RHS AGM 1993
USDA zones5 to 8
SunNeeds full sun (6+ hours)
WaterNeeds dry soil
Size3 to 4 feet tall12 to 24 inches wide
- Bloom season
- Summer, autumn
- Soil types
- Sand, loam, chalk
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
Tripartite sea holly (Eryngium tripartitum) is a perennial for borders and low maintenance gardens. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes full sun and dry, sandy, loamy, or chalky soil. Deer rarely make it their first choice. It grows 35 to 47 inches tall and blooms in summer and again in autumn. Butterflies, bees, and birds visit the flowers.
Pairs well with Silver feather grass, Coneflower, and Nana white sagebrush.
Native range
South America.