Kopper king hibiscus is named after its copper-colored foliage that provides dramatic contrast against its giant, pink blooms. The enormous, 10-12 inch blooms not only deliver a spectacular show to the summer garden, but will also attract butterflies and hummingbirds. Click here to learn more about how to grow kopper king perennial hibiscus, hardy hibiscus, rosemallow from almost eden. i bought several hardy hybrid hibiscus (kopper king, lord baltimore, blue river ii,.). Hibiscus kopper king - summer flowering plants when the summer temperatures heat up, this perennial plant fills up with huge beautiful white flowers with red eyes against copper to red foliage. Hardy perennial hibiscus will die back to the ground in winter. A good mulching protects them until new growth is ready to pop up in mid to late spring. Many cultivars of hardy hibiscus sold at garden centers are labeled simply as hibiscus x or perhaps hibiscus x moscheutos, for. Hardy hibiscus plants, commonly called rose mallow, produce large, tropical-looking flowers in the most striking colors, theyre impossible to miss. Kopper king hardy hibiscus plant (rose mallow) unavailable for 2020.