Larkspur – Rocket Dark Blue/Purple

Rocket Larkspur is a striking annual flower native to southern Europe and the Mediterranean region. Known for its tall, elegant spires of densely packed blooms, this variety showcases rich shades of deep indigo, violet, and royal purple that bring dramatic color and height to the garden. The flowers rise on slender stems above fine, fern-like foliage, creating a soft, airy contrast to the bold intensity of the blossoms. Reaching two to four feet in height, Rocket Larkspur adds a classic, vertical element to borders, cutting gardens, and wildflower plantings.

Highly valued as a cut flower, Rocket Larkspur provides long-lasting color in fresh arrangements and retains its beauty when dried. Its deep blue to purple tones blend beautifully with pinks, whites, and silvers, making it a versatile addition to both cottage and formal garden designs.

All parts of the plant — especially the leaves and seeds — are poisonous if ingested, containing natural alkaloids that can be harmful to people and pets. Care should be taken when planting in areas where children or animals may play.

For best results, Rocket Larkspur can be planted in fall or early spring. In regions with mild winters, fall sowing encourages stronger plants and earlier blooms. If planting in spring, refrigerate the seeds for one to two weeks before sowing to mimic winter’s cold and improve germination. The seeds sprout best in cool soil and may fail to germinate if temperatures are too warm.

Plant in full sun to partial shade in well-drained soil with moderate moisture. Avoid soggy conditions, as overly wet soil can cause root or crown rot. Blooming typically begins in late spring and continues through summer, with successive sowings extending the flowering season into early fall. Because Rocket Larkspur forms a long taproot, it should be direct-sown into the garden rather than transplanted once seedlings develop.

With its stately flower spikes and rich blue-purple hues, Rocket Larkspur adds elegance and color depth to any landscape — a timeless favorite for garden borders, meadows, and cut-flower arrangements.

**For larger quantities than listed for sale please contact us for availability and pricing.

The broadcast rate for seeding is 20 – 25 pounds per acre.

The seed drill rate for seeding in rows is 10 pounds per acre.