Hardy hibiscus plants are sturdier than their tropical cousins. In fact, they do well in USDA hardiness zones 4 and up. Four species of hardy hibiscus are native to North Carolina, and even the species of hardy hibiscus that are not native grow well there, as the state lies in USDA zones 6 to 8. Hardy hibiscus requires little winter care.
Things You'll Need
Water the hibiscus in your North Carolina garden in the late fall right before the first freeze. This provides the plant with water to get it through the winter.
Apply a layer of mulch around the base of the hibiscus plant in the fall. The mulch should be 2 to 3 inches thick.
Allow the hibiscus to die back in the winter. It will die back to the ground. Trim back the dead foliage to within 5 to 6 inches of the hibiscus’ crown if desired.