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Annual Larkspur growing in a garden

Annual flower

Annual Larkspur plant profile

Consolida ajacis

An annual flower for full sun.

Last updated .

When to plant

When to plant Annual Larkspur

Larkspur is a winter annual. The University of Arkansas directs sowing seed in September and October in southern gardens for spring bloom; in northern areas it blooms over summer. Scatter seed thinly in a fertile, uniformly moist bed.

The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.

Open Annual Larkspur in my garden calendar

This uses the published planting season. It is not adjusted to local frost dates.

Growing conditions

Sun
Full sun
Lifecycle
Annual

Common problems

Watch for these

Also watch for: self seeding.

Next steps

Continue with Annual Larkspur

Evidence trail

Evidence behind this profile

Original extension and institutional publications behind the planting, care, and safety facts on this page.

  1. Plant of the Week: Larkspur (Consolida ajacis)

    University of Arkansas System Division of Agriculture, Cooperative Extension Service. Supports general reference. Checked 2026-06-18.

  2. Toxic and Non-Toxic Plants: Larkspur (Delphinium species) entry

    ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.