columbian larkspur
Delphinium trolliifolium
USDA zones5 to 9
SunNeeds partial sun (4 to 6 hours)
WaterHandles dry or moist soil
Size2 to 6 feet tall2 to 3 feet wide
- Habit
- Herb
- Bloom season
- Spring, summer
- Bloom color
- Blue , purple
Attracts
Notes
Columbian larkspur (Delphinium trolliifolium) is a perennial for cottage gardens, native gardens, and the back of a shady border. It is hardy to USDA zone 5, or down to -20°F (-29°C). This plant likes part sun and dry to moist soil. Tall airy spikes of deep blue flowers rise above large, shiny, deeply lobed leaves and attract hummingbirds, bees, and butterflies. Deer tend to browse other plants first. Plants spread slowly from short, thick rhizomes into colonies.
Pairs well with Aureola Japanese forest grass, Autumn fern, and Rozanne crane's-bill.
Native range
CA and OR.