Also known as Mammoth Grey Stripe. If you want to grow the champion sunflower for all the fall fair, this heirloom variety is the one to choose! Huge, single yellow blooms ranging from 25-35cm (10-14") in diameter are produced on tree trunk like stems that can easily grow to 3m (9') or more in height! This is the best variety for feeding the birds as well as for roasting seed for yourself! Taller plants may need staking due to the weight of their mighty seed heads!