Impressive deep bluish-purple spikes of double blooms on 3-5’ plants draw attention and inspire awe. We adore Giant Imperial Blue Spire Larkspur in fresh or dried bouquets. Early, fast growing annual that prefers full-sun. One of our staple flowers for June and early July blooms.
For tips on when to plant flower seed, check out our NW Flower Planting Calendar!
Days to maturity: 80-90 days
Latin name: Consolida ajacis
Life cycle for seed saving: Annual
Chill Blue Spire Larkspur seeds at 35 degrees for 7 days. Direct sow (recommended) or transplant in full sun when soil is below 55 degrees. Seeds require darkness and vernalization to germinate. Planting depth: ¼.” Plant spacing 4-6”.
All of our seed is Non-GMO and Certified Organic by Washington State Department of Agriculture. We grow the majority of our varieties here at Deep Harvest Farm on Whidbey Island while we purchase the rest from other small, organic Northwest seed growers. Finally, all of our offerings are open-pollinated (OP) so that you too can save and share seed from these plants!