Larkspur
Consolida ajacis
Larkspur belongs to the brave cold edge of the season. Sow it before the easy weather arrives.
Garden timing
Direct sow very early into cool soil; fall sowing is also useful.
Space-saving method: grow with stake support.
Plant intelligence
Use one square on a cool-season edge; it is vertical but not a warm-season filler.
Lifecycle: annual
Habit: cool-season vertical spike flower
Height: 24-48 inches
Spread: 8-12 inches
Germination: 14-21 days
Sow depth: 0.25 inches
Bloom: spring, early summer
Attracts: bees
Record score
Species identity
This record is anchored to a stable botanical name, then adjusted for square-foot garden decisions.
Garden decision matrix
Species and variety notes
Sublime mixes are easy, but single-color blue strains make the cleanest design statement.
A refined color for a flower square that should not shout.
Best use: cut and garden display. Tradeoff: needs edge placement or support so it does not shade smaller crops.
lavender gray, cut flower, cool-season100-120 days36-48 inches tallThe standard larkspur series when height and stems are the goal.
Best use: cut and garden display. Tradeoff: needs edge placement or support so it does not shade smaller crops.
tall, cut flower, classic90-110 days36-48 inches tallCompanions
peas, lettuce, bachelor-button, calendula
Cautions
Needs cold to germinate well.
All parts are toxic if eaten.
External enrichment
Cached name: Consolida ajacis. Optional lookups can compare GBIF, iNaturalist, Perenual, and Trefle without changing the reviewed garden record.
Open enrichment JSONData layers
API source score
USDA PLANTS Database
Plant identity, taxonomy, nativity, and conservation flags.
Source referenceGBIF Species API
Accepted scientific names, taxonomy matching, and occurrence context.
Source reference