A new and distinct cultivar of winter hardy Hibiscus plant named ‘Kui Nuku’ is the result of a unique hybridization. This new and distinct cultivar is characterized primarily as to its novelty by its extreme cold hardiness to Zone 4, large thick-textured, magenta-pink flowers and its “Maple-shaped” leaves with a purple coloration, compactness of about 3 feet, its vigorous and uniform growth habit and its floriferous nature from midsummer until frost.
