Postmodern landscape design refers to a style of landscape architecture that emerged in the late 20th century. It is characterized by its eclectic mix of historical, cultural, and artistic influences, often incorporating elements from various periods and styles. Landscape materials in this context can include a wide range of natural and man-made elements, such as plants, rocks, water features, and hardscape elements, which are used to create a diverse and often non-traditional aesthetic. This approach emphasizes the interplay between nature and culture, and the use of these materials is driven by the designer's intent to create a unique and meaningful space.