Hibiscus 'Plum Crazy' has rose purple flowers with dark veins and very dark purple centers. The flowers are huge, measuring up to 10 inches in diameter, and bloom from mid summer to fall. At maturity the plant stands 3-4 feet high with maple-like purplish green leaves. It is hardy to zone 4. The name Hibiscus came from the Greek word “hibiskos” that meant “marshmallow.” The sticky root or stem of some plant in the mallow family was used at one time to make marshmallow confections.