Organic Mammoth Large Grey Sunflower (Helianthus annuus) – Giant Blooms, Edible Seeds, Excellent for Wildlife – 25+ Seeds

Minimum: 25+ seeds

Giant Blooms | Edible Seeds | Wildlife Favorite

Bring towering beauty and abundant harvests to your garden with the Organic Mammoth Large Grey Sunflower (Helianthus annuus)—a classic heirloom variety grown for its massive golden blooms, plump edible seeds, and ability to attract wildlife. With stalks reaching 8–12 feet tall and flower heads up to 12–24 inches wide, this sunflower is as dramatic as it is productive.

Perfect for home gardens, farms, and pollinator-friendly landscapes, Mammoth sunflowers add height, color, and utility. Their striped grey seeds are delicious roasted or raw, and they double as a protein-rich food source for birds, squirrels, and pollinators.

🌿 Why Grow Mammoth Large Grey Sunflowers?

✔️ Towering Garden Statement – Adds vertical interest with stalks that soar sky-high
✔️ Huge Flower Heads – Produces stunning yellow blooms up to 2 feet across
✔️ Nutritious Seeds – Edible for humans; perfect roasted or eaten raw
✔️ Wildlife-Friendly – Provides food for bees, butterflies, birds, and small mammals
✔️ Easy to Grow – Thrives in full sun and adapts to a variety of soils
✔️ Organic & Heirloom – Non-GMO, open-pollinated seed you can save year after year

🌱 Planting & Growing Info

• Botanical Name: Helianthus annuus

• Plant Type: Annual

• Seeds Per Packet: 25+ Organic, Open-Pollinated Seeds

• Height: 8–12 ft

• Flower Size: 12–24" wide

• Days to Maturity: 80–100 days

• Sunlight: Full sun (6–8 hrs daily)

• Soil: Loose, fertile, well-draining soil (pH 6.0–7.5)

• Spacing: 18–24" apart; rows 30–36" apart

• Watering: Moderate, consistent moisture; avoid waterlogging

• Zones: USDA 3–9

🧠 Growing Tips

🌻 Sow directly outdoors after the danger of frost has passed—sunflowers don’t transplant well.
🌻 For continuous blooms, stagger plantings every 2–3 weeks through early summer.
🌻 Use stakes or plant in blocks to protect from wind damage.
🌻 Mulch around the base to conserve soil moisture.
🌻 Harvest seeds when flower backs turn yellow-brown and petals dry. Hang heads upside down to finish drying.

🍴 Ways to Use Mammoth Sunflowers

🥗 Edible Seeds – Roast lightly with salt for a crunchy, nutrient-dense snack
🐦 Bird Feeder in the Garden – Leave heads on stalks for goldfinches, chickadees, and other wild birds
🌻 Cut Flowers – Oversized blooms make dramatic additions to bouquets and summer arrangements
🌱 Soil Improvement – Dense roots help break up soil and add organic matter after composting
🌞 Natural Shade – Plant in rows to create a seasonal "living wall" for garden beds

💡 Nutritional Benefits of Seeds

• High in protein and healthy fats

• Excellent source of Vitamin E, magnesium, and selenium

• Provides antioxidants that support immune health

• Energy-dense for both people and wildlife

🏡 Great For:

• Home gardeners wanting edible and ornamental value

• Homesteaders seeking multipurpose heirloom crops

• Wildlife gardens to support pollinators and birds

• Kids’ gardens—fun, fast-growing, and giant-sized!

• Seasonal market displays and roadside stands

⚠️ Note: While sunflower seeds are edible and nutritious, the shells may be tough—consider dehulling for easier snacking. If growing for wildlife, simply let flower heads dry naturally and watch as birds and pollinators flock to your garden.

✨ Grow Your Own Giants

With the Organic Mammoth Large Grey Sunflower, you’re not just planting a flower—you’re planting a giant beacon of beauty, food, and life. From towering summer blooms to abundant seed harvests, this sunflower remains a favorite among gardeners, homesteaders, and wildlife enthusiasts.

🌻 A true heirloom classic that brings joy, nutrition, and natural wonder to any garden.