Seed Needs, Calendula Ball's Improved Orange (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: Balls Improved Orange is categorized as an annual flowering plant. Annuals will grow quickly from fresh flower seeds, bloom profusely through the summer months, and later die with the first killing frost.Annual. Blooms heavily and dies with the first frost. Although Ball's Improved Orange, as well as other Calendula, won't require much maintenance, we do recommend deadheading the plants. Deadheading, or the removal of old, spent blooms will prolong bloom time, up until the end of the Autumn season. Balls Improved Orange Calendula is a versatile, flowering plant. They can be grown directly in the garden, in flower beds, raised beds, along fences, driveways & walkways, or even in pots and containers as well. 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.