Mammoth Grey Stripe Sunflower is a mammoth of a sunflower, boasting huge blooms of almost 12 inches across on stems 8-12 feet tall! Harvest some grey-striped sunflower seeds for toasting & snacking in the Fall. An exciting sunflower to watch grow! Species: Sunflower, Mammoth Grey Stripe Sunflower Type: Flower Seeds Sunlight: Full Sun, Partial Shade Days to Germination: 7 - 14 Days to Bloom: 100-125 Height: 8-12 ft Brand: TomorrowSeeds Seeds Packed For: 2023 Mammoth Grey Stripe Sunflower Seeds | Huge Giant Yellow Sun Flower Competition Beauty Seed Flowers Helianthus Non Gmo For 2023 Fast Shipping