‘Heirloom Blue Mirror’ Chinese Delphinium Seeds

Blue Mirror carries true ultramarine in a form that stays compact and airy. Fine, lacy foliage is covered with sprays of small trumpet-shaped flowers, creating an 18–24-inch cloud of blue rather than the formal towers of traditional delphiniums.

This heat-tolerant Chinese delphinium blooms its first year when started early and returns in Zones 3–7. The nectar-rich flowers draw hummingbirds and butterflies, while the compact stems slip naturally into informal bouquets.

• Botanical name: Delphinium grandiflora
• Life cycle: Perennial; blooms the first year
• Hardiness: USDA Zones 3–7
• Exposure: Full sun
• Sowing: Start indoors 8–10 weeks before the last frost
• Planting depth: 1/4 in.
• Germination: 21–28 days
• Mature height: 18–24 in.
• Final spacing: 10–12 in.
• Approximate seed count: 29–30

Cut each finished flush to the base to invite rebloom, and keep the blue sprays coming with regular water. Discover more distinctive varieties in our flower seed packets.