Sunflower Seeds – Gray Giant

Grow impressive Gray Giant sunflowers from these premium-quality seeds. This heirloom variety is known for its towering height, sturdy stalks, and large blooms featuring soft gray-tinted centers and classic yellow petals. Ideal for borders, garden backdrops, and statement plantings, Gray Giant sunflowers thrive in full sunlight and nutrient-rich, well-drained soil. These seeds provide strong germination and vigorous growth, making them a standout addition to any garden.

Features:

• High-quality Gray Giant sunflower seeds for outdoor planting

• Produces tall plants with large blooms and gray-toned centers

• Excellent for garden backdrops, borders, and ornamental displays

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

• Strong germination and consistent seasonal performance

Specifications:

• Seed Type: Gray Giant Sunflower (Helianthus annuus – tall heirloom variety)

• Growth Habit: Tall upright annual

• USDA Zones: 3–10 (grown as a warm-season annual)

• 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; water regularly without over-saturation

• Support Needed: Staking may be necessary due to height

• Bloom Time: Summer through early fall