Seed Needs, Joker Sunflower (Helianthus annuus) 45 Seeds Quality Sunflower seeds packaged by Seed Needs. This packet measures 3.25" wide by 4.50" tall and come with a full colored illustration on the front side, as well as detailed sowing instructions on the reverse. The Joker is a hybrid variety of Sunflower that produces 6 to 7 inch, pollen free flowers. This beautiful Sunflower displays double, bi-colored 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 killing frost. All Sunflower seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current, and the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.