Water is an important rare resource that needs to be saved. In spite of considering landscape architecture as one of the most components of cities that use a huge amount of water, it can be an approach to save water without losing the beauty of cities. Therefore, the research pinpoints the dilemma of landscape architecture and its relationship with water and how to design the landscape using less water by different means. The research argues that xeriscape concept is an approach to guarantee the sustainability of landscape architecture. This can be achieved by the ideal usage of water by selecting the suitable techniques either the irrigation system or reusing water, moreover, by the proper management for landscape architecture and its requirements. The research discusses these approaches through the literature review and concludes the different means of saving water by applying the xeriscape concept, irrigation systems, and management. These means are summarized in a schedule in order to be a guide for landscapers to save water in landscape architectural projects. This schedule is used to measure the percentage of applying the concluded items for saving water in different selected gardens to illustrate some useful water-conserving techniques in landscape architecture.