Mammoth Grey Stripe Sunflower – 25 Seeds

Why gardeners love this pick

Grow a true garden giant with our Mammoth Grey Stripe Sunflower seeds. This is the classic, towering sunflower famous for producing enormous flower heads that can measure over a foot across! The sturdy stalks soar towards the sky, creating a dramatic statement in any garden. After the brilliant golden-yellow petals fade, the massive head is packed with large, meaty, grey-and-white striped seeds that are perfect for roasting for a healthy snack or for feeding birds and other wildlife through the winter.

⭐ What you'll love

• The classic giant sunflower, with huge heads packed with edible seeds.
• Towering stalks create a dramatic, beautiful backdrop or screen.
• The large, meaty seeds are perfect for roasting or for feeding birds.
• A fun and rewarding project for kids and gardeners of all ages.

🌿 Seed details

• Plant Name: Mammoth Grey Stripe Sunflower (Helianthus annuus)
• Seed Quantity: Approx. 25 seeds
• Type: Heirloom, Open Pollinated, Non-GMO
• Lifecycle: Annual
• Height: 8-12 feet
• Days to Maturity: 90-100 days
• USDA Zone: 2-11
• Origin: American Grown

🌱 Growing instructions

• Sowing: Direct sow outdoors after all danger of frost has passed and the soil is warm.
• Depth: Plant seeds 1 inch deep.
• Spacing: Space or thin plants to 2-3 feet apart.
• Light Requirement: Full Sun.
• Soil: Prefers average, well-draining soil.
• Support: Taller plants will require staking to prevent them from falling in high winds.

✅ Our seed packets

• Professionally designed and made.
• Resealable for convenient, long-term storage.
• Eco-friendly and recyclable (contains no plastic).
• Includes full, detailed growing instructions.
• Vigorously tested to ensure the highest germination rates.
• Custom packets for weddings, baby showers, or events are available. Just message us!

🚚 Shipping

• FREE SHIPPING on all orders of $35 or more.
• Flat Rate shipping no matter how many seeds you order.
• Tracking is included with every order.