Sunflower Seeds – Dark Blue

Grow rare dark blue sunflowers from these premium-quality seeds. This unique heirloom variety produces bold, blue-toned blooms that create a striking visual contrast in ornamental beds, borders, and cut-flower arrangements. Dark Blue sunflowers thrive in full sunlight and well-drained, nutrient-rich soil. With strong germination and consistent seasonal growth, these seeds offer gardeners an eye-catching and unusual addition to their garden displays.

Features:

• High-quality dark blue sunflower seeds suitable for outdoor planting

• Produces rare blue-toned blooms for unique and dramatic garden displays

• Ideal for ornamental beds, borders, and cut-flower use

• Thrives in full sun and fertile, well-drained soil

• Strong germination and reliable seasonal performance

Specifications:

• Seed Type: Dark Blue Sunflower (Helianthus annuus – specialty variety)

• Growth Habit: Upright annual (commonly grown annually even when labeled “perennial”)

• USDA Zones: 3–10

• Season for Sowing: Spring to early summer (February–June)

• Germination Time: 7–14 days in warm soil

• Sunlight Requirement: Full sun

• Soil Requirements: Loamy, nutrient-rich, well-drained soil

• Watering Needs: Moderate; avoid waterlogging

• Support Needed: May require staking in windy conditions

• Bloom Time: Summer through early fall