Sunflower Mammoth Grey Striped represents the ultimate expression of sunflower grandeur, commanding garden landscapes with towering stature and colossal flower heads spanning 10 to 12 inches in diameter. This distinguished heirloom variety produces a single, exceptionally sturdy stem supporting massive blooms adorned with striking grey striping patterns. The seed heads develop abundantly with large, nutrient-dense seeds that excel for both human consumption and wildlife feeding, offering superior flavor and nutritional profile compared to smaller varieties. Blooms in approximately 60 days, reaching heights of 8–12 feet.

Germination Rate: 91%. Test Date: 8/25. AWSC.

Texas Minimum Germination Rate: 70%.

Why Choose Sunflower Mammoth Grey Striped?

• Heirloom Seed: Passed down through generations for at least 75 years for reliable harvests and authentic beauty.
• Non-GMO Seeds: Plants whose DNA structure has not been altered in ways that do not occur naturally through traditional breeding methods.
• Towering Giant: Reaches 8–12 feet tall with 10–12 inch blooms — a dramatic focal point in any garden or landscape.
• Edible & Nutritious Seeds: Large, plump seeds are excellent roasted as a snack, ground into meal, or used in cooking and baking.
• Pollinator Magnet: Attracts bees, butterflies, and birds, supporting local biodiversity and a healthy garden ecosystem.
• Easy to Grow: Reliable, low-maintenance performer suited for gardeners of all experience levels.

Planting Tips for Success

• When to Plant: Direct sow outdoors after the last frost when soil temps reach 50°F or higher. In Texas and warm climates, plant in early spring for summer blooms.
• Sunlight: Full sun — at least 6–8 hours of direct sunlight daily for maximum height and bloom size.
• Soil: Well-draining soil with a pH of 6.0–7.5. Sunflowers are adaptable and tolerate poor soil better than most vegetables.
• Planting Depth: Sow seeds 1 inch deep.
• Spacing: Space plants 24–36 inches apart for single large heads. Closer spacing (12–18 inches) encourages branching and multiple smaller heads.
• Watering: Water deeply but infrequently once established. Sunflowers are drought tolerant — avoid overwatering which can cause root rot.
• Support: Stake or tie tall plants in windy locations — stems can reach 12 feet and become top-heavy at peak bloom.
• Fertilizing: Avoid high-nitrogen fertilizers which promote leafy growth over blooms. A balanced fertilizer at planting is sufficient.
• Harvesting: Blooms appear in approximately 60 days from direct sow. For seeds, allow heads to fully dry on the stalk. Cut heads when the back turns yellow-brown and seeds are plump. Hang to finish drying before shelling.

Why Choose David's Garden Seeds®?

• Veteran-Owned: Supplying premium seeds since 2009.
• GO TEXAN Certified: Supporting local agriculture and communities.
• Integrity Pledge: David's Garden Seeds has taken the Seed Integrity Pledge.
• Great Customer Service: David answers all customer service questions. Usually within a few minutes.
• Vegetable Seed License: David's Garden Seeds has been granted a Vegetable Seed License for the State of Texas.

Cooking Methods

• Roasting: Toss raw hulled seeds with oil and salt, roast at 300°F for 30–40 minutes until golden and crisp.
• Raw Snack: Enjoy hulled seeds straight as a nutritious, protein-rich snack.
• Sunflower Seed Butter: Blend roasted seeds in a food processor until smooth for a nut-free alternative to peanut butter.
• Salads & Grain Bowls: Sprinkle toasted seeds over salads, rice, or quinoa bowls for added crunch and nutrition.
• Baking: Fold seeds into breads, muffins, granola, or energy bars for a hearty, nutty flavor.
• Trail Mix: Combine with dried fruit, nuts, and dark chocolate chips for a high-energy snack.

Order Mammoth Grey Striped Sunflower Seeds Today

Order yours today and grow your own towering sunflowers in your spring and summer gardens.

Nutritional Information

Per 1 oz (28g) dry roasted sunflower seeds (harvested seeds, not planting seeds):

• Calories: 165
• Total Fat: 14g (18% Daily Value)
• Saturated Fat: 1.5g (8% Daily Value)
• Sodium: 1mg (0% Daily Value)
• Total Carbohydrates: 7g (3% Daily Value)
• Dietary Fiber: 3g (11% Daily Value)
• Total Sugars: 1g
• Protein: 5.5g
• Vitamin E: 7.4mg (49% Daily Value)
• Magnesium: 37mg (9% Daily Value)
• Selenium: 22.5mcg (41% Daily Value)

Important Disclosures

• Variety Disclaimer: Heirloom varieties may exhibit natural variation in plant size, bloom time, and seed yield. Results may vary based on growing conditions, climate, and gardening practices.
• Seed Storage: Store seeds in a cool, dry place away from direct sunlight. Properly stored seeds remain viable for 2–3 years.
• Planting Zones: Mammoth Grey Striped Sunflowers perform best in USDA Hardiness Zones 3–11. Direct sow after last frost when soil temperatures reach at least 50°F.

Grow something beautiful. Grow something delicious. Grow with David's Garden Seeds®.