Seed Needs, Henry Wilde Sunflower (Helianthus annuus) 100 Seeds Non-GMO Quality Sunflower seeds packaged by Seed Needs. Intended for the current and the following growing season. Packets are 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. Henry Wilde produces large 7 to 10 inch, yellow blooms with dark brown centers. They grow to a mature height of roughly 5 to 6 feet tall. Grown as an annual flowering plant, the Henry Wilde Sunflower will grow quickly, bloom profusely through the summer months and later die with the first killing frost. Sunflowers are among one of the easiest plants to establish from fresh flower seeds. They dont take very long to germinate, need little to no care, and arent too picky on soil conditions. All Sunflower seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & 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.