Delphinium elatum Guardian White

Delphinium elatum ‘Guardian White’ is a stately perennial renowned for its pure white blooms and strong, upright stems. This premium variety is ideal for both garden plantings and professional cut flower production, offering consistent, uniform blooming even in shorter days. ‘Guardian White’ provides impressive flower spikes that create a striking vertical accent in beds, borders, and arrangements, and it is a top choice for those looking to add elegance and brightness to their floral displays.

Key Features:

• Flower Color: Bright, pure white blossoms.
• Growth: Tall, uniform spikes supported by sturdy stems.
• Applications: Perfect for perennial beds, mixed borders, and cut flower gardens.
• Bloom Time: Blooms up to six weeks faster from transplant compared to traditional open-pollinated types.
• Hardiness Zones: Perennial in Zones 3–7, typically lasting up to three seasons.

Sowing Instructions:

• Timing:
  • Start indoors 10–16 weeks before planting out.
  • Germination: 10–20 days at 18–21°C.
• Method:
  • Sow seeds lightly covered in seed trays or small pots.
  • After germination, transplant seedlings into larger containers or cell packs.
  • Grow seedlings at 10–13°C, then harden off and transplant outdoors after the last frost.
• Spacing:
  • 12–18 inches (30–45 cm) apart for perennial plantings.
  • 12 inches (30 cm) apart for annual cut flower crops.

Growing Instructions:

• Light: Thrives in full sun to partial shade.
• Soil: Prefers well-drained, fertile soil with added organic matter.
• Fertilizer: Feed lightly but frequently with a balanced fertilizer.
• Watering: Keep soil consistently moist, but avoid overwatering.
• Support: Strong support is advised to keep tall spikes upright.

Care and Maintenance:

• Pruning: Deadhead spent flowers to encourage continuous blooming.
• Seasonal Maintenance: Cut back plants after flowering to promote a second bloom in late summer or early fall.
• Overwintering: Provide mulch or winter protection in colder climates.

Uses:

• Cut Flowers: Excellent for bouquets and floral arrangements.
• Garden Display: A show-stopping addition to perennial beds and borders.
• Commercial Applications: A reliable choice for florists and greenhouse growers.

Delphinium elatum ‘Guardian White’ offers bright, pure white flower spikes, sturdy stems, and a strong vertical presence. Its reliability and beauty make it a must-have for gardeners and professional growers alike.