Showy Climber is a term used to describe two flowering plants, Clematis and Wisteria. Both are known for their beautiful, showy blooms and their ability to climb up walls and trellises. Clematis is a genus of flowering plants that includes over 300 species, while Wisteria is a genus of woody climbing vines that can reach up to 30 feet in length. Both plants are popular choices for gardeners looking to add a touch of beauty to their outdoor spaces.