Southern Catalpa (Catalpa bignonioides): Essential Guide Denver dog poisoned by tree at Washington Park Have you seen this impressive tree that produces bean pods and wondered what it was or what it could be used for? The Catalpa Tree (Catalpa bignonioides) is also referred to as Polk Salad Annie Chinese catalpa Catalpa ovata The Morton Arboretum Catalpa Tree: Types, Leaves, Flowers, Seed Pods (With Catalpa Worms)