Hibiscus 'Jazzberry Jam' Common Names: Rose Mallow, Swamp Mallow, Hardy Hibiscus, Dinner-Plate Hibiscus, Fleming hybrid Hibiscus, or Perennial Hibiscus. Zones: 4 to 9. Full Sun to part shade. Mature height 4 to 5 feet, width 6 to 7 feet.9 inch wide, deep magenta flowers with a red eye have r... See More