American Giant is a super tall hybrid sunflower is a sure bet to sell to homeowners who are itching to grow the tallest sunflower in the neighborhood! Growing anywhere from 8 to 15' tall, American Giant Sunflower is less likely to fall over in wind or rain compared to other "giant" types. It also makes an excellent windbreak along hedgerows or the perimeter of properties. Best yet, leave the heads on for seed for the birds later in the season!
Seed Untreated 500 Seeds: On backorder. Pending ETA from Supplier.
Soil temperature: 70 - 75 degrees fahrenheit
Germination lighting: Dark required
Germination days: 4 - 8 days
Grow on temperature day: 55 - 60 degrees fahrenheit
Plant spread: 24 - 30 inches
Plant height: 96-120''
Plant type: annual
Maturation days: 65-80 days