The listing, 20 Giant Sunflower seeds has ended.
Also known as Mammoth sunflowers
amazon price is $6.95 for 25 seeds
Days to Maturity: 90 to 110
Non-GMO, easy to use and hand packed in the United States by Andy Zigan--Brighton, CO
Very large head--12 to 24 inches in width
Grows to a height of 8 to 12 feet
Germination rate: 80%