Helianthus annuus
Helianthus annuus
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If you are looking for the biggest and tallest sunflower around, then boy have you found it. This sunflower can reach up to 16' tall with 10" wide blooms. Because of their size, American Giant Sunflowers make for perfect competition flowers. These ginormous blooms are supported on sturdy stalks with large leaves.
Interested in having your own sunflower garden? Check out this guide!
Full Sun
14 - 21 Days
18"+
168 - 192"
Average (1 - 2 in / week)
Characteristics: Attracts Butterflies, Pollinators, Songbirds, and Specialized Bees, Pet Friendly
Botanical Name: Helianthus annuus
Approximate Number of Seeds Per Packet: 10
Plant Type: Flower
Plant Lifecycle: Annual
Pelleted Seed Count: 5 - 10
Fill Weight (grams): 1
Days To Bloom: 65 - 75 Days
Landscape Use: Bedding
Disease Resistance: Deer Resistance|Dry Soil|Poor Soil
Tolerance: Drought Tolerant
Growing Season(s): Spring|Summer
Harvest/Bloom Season(s): Summer
Package Dimensions: 3.25 x 4.5"
After all danger of frost, sow American Giant Sunflower seeds in open ground well exposed. Cover with 1" of soil. When plants are 4" tall, thin. Sunflowers need lots of water.
Planting Depth: 1"
Seed Spacing: Sow American Giant Sunflower seeds roughly 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 seed by cutting flower heads when backs are yellow, then hanging downward in a warm, dry place.
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