This document discusses sustainable design principles for small landscapes. It outlines five considerations for sustainable design: being functional, maintainable, environmentally sound, cost effective, and visually pleasing. Some key design principles discussed include unity, simplicity, variety, balance, emphasis, sequence, and scale. The document provides tips for plant selection and small landscape design, such as using tall plants as backdrops and designing turf areas for low maintenance. Overall, the document provides guidance on applying sustainable design concepts for optimizing small outdoor spaces.