Tall, sturdy spikes support double deep-blue 'larkspur' flowers on this hardy perennial that prefers climates with cool summer temperatures. Plant this delphinium in full sun and moisture-retentive soil, and stake it if it's in a windy location. It requires additional water during periods of extreme heat; it's rabbit and deer resistant.

Archived Copy: This content was captured before February 2022, and is no longer being updated.