Helianthus annuus
Helianthus annuus
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Mammoth Sunflower's hardy nature requires minimal maintenance, giving you more time to enjoy the beautiful blooms it provides!
These organic sunflower seeds produce stately yellow sunflowers with enormous heads, more than one foot across, which provide spectacular beauty first, then seeds for roasting or bird feeding. An ideal addition to any garden, these sunflowers are easy to grow and yield gorgeous, vibrant yellow blooms.
Visit this link to learn more about growing a sunflower garden.
Sku: 1540
Common Name: Sunflower
Botanical Name: Helianthus annuus
Full Sun
14 - 21 Days
18"+
84 -144"
Average (1 - 2 in / week)
Characteristics: Attracts Butterflies, Pollinators, Songbirds, and Specialized Bees, Pet Friendly
Color: Yellow
Fill Weight (grams): 5
Approximate Seed Count: Approximately 10 - 50
Plant Type: Flower
Plant Lifecycle: Annual
Days To Bloom: 75 - 90 Days
Landscape Use: Bedding
Resistance: Deer|Dry Soil|Poor Soil
Tolerance: Drought|Heat
Growing Season(s): Spring|Summer
Harvest/Bloom Season(s): Summer
Package Dimensions: 3.25 x 4.5"
Sow a few seeds evenly spaced in hills, 8 inches high and 12 inches across. Young vines should have a fence, trellis, or heavy cord on which to climb. When young vines are about 8 inches, thin to 3 plants per hill. Does not transplant well.
Planting Depth: 1"
Seed Spacing: Plant Organic Mammoth Sunflowers seeds approximately 18 - 24" apart.
Nutrient Care Instructions: Apply SUPERthrive once per week. Soak in solution of 1/4 tsp per gal for 15 min. or longer depending on size and type.
Excellent for tall blooming backgrounds and screens for unsightly places. Harvest seeds by cutting flower heads when backs yellow, then hang downward in a warm, dry place.
Free shipping is available on all orders over $35. Orders under $35 have a shipping rate of $7.99, and seed-only orders have a shipping rate of $2.99. Most orders are shipped within 2 business days of purchase. However, live plants and embroidered items may take 2-7 business days to ship, depending on the day of the week you place your order. For more information, please click here to review our shipping & returns policy.
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