The Joker is a hybrid variety of Sunflower that produces 6-7 inch, pollen free flowers. This beautiful Sunflower displays double, bi-coloured blooms in shades of red, orange & yellow. Each plant will stand to a mature height of roughly 4 to 8 feet tall. The stems may need support until maturity. Once established, they are very strong and will stand upright with no need for stakes or support. Helianthus annus is grown as an annual flowering plant that grows quickly, blooms profusely through the summer months and later dies with the first frost.