What is a common characteristic of landscaping methods recommended for water conservation?

Using native plants is a common characteristic of landscaping methods recommended for water conservation because these plants are well-adapted to the local climate and soil conditions, requiring less water once established. Native plants typically have deeper root systems, enabling them to access moisture from deeper soil layers, and they often thrive with minimal maintenance. This not only reduces the need for irrigation but also supports local ecosystems and wildlife.

In contrast, frequent irrigation is counterproductive to water conservation efforts, as it is intended to keep plants growing in conditions where they would not naturally thrive. Incorporating synthetic materials generally does not contribute to water conservation; instead, it can impede natural water absorption and increase runoff. Lastly, employing water-intensive plants conflicts directly with the principle of water conservation, as these plants typically require more irrigation and maintenance, defeating the purpose of a water-efficient landscape.