Seed Needs, Calendula Pacific Beauty Yellow (Calendula officinalis) 500 Seeds Quality Calendula 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. Season: Annual. Blooms heavily and dies with the first frost. Grows to a mature height of about 12 to 24 inches tall. Requires an area of full sunlight and average moisture daily. All Calendula 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.