Seed Needs, Purple Prince Zinnia (Zinnia elegans) 250 Seeds Quality Zinnia 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. A similar selection to that of the Benary's Giant Zinnia, this variety displays beautiful purple colored blooms that will expand to a large diameter of 4 to 6 inches wide. The flower heads are filled with rows and rows of gorgeous, tightly packed petals. The plants themselves will grow to a mature height of roughly 30 to 40 inches tall. Grown as an annual flowering plant, the Purple Prince Zinnia will grow quickly, bloom profusely and then later die with the first killing frost. All Zinnia 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.