Define "xeriscaping."

Xeriscaping is indeed defined as a landscaping method that conserves water by using drought-tolerant plants and efficient irrigation practices. This approach is essential in regions where water scarcity is a concern, as it reduces the need for supplemental irrigation by selecting plant species that thrive in dry conditions.

The strategy focuses on the appropriate selection of plants that require minimal water, combined with practices such as mulching, using efficient irrigation systems (like drip irrigation), and designing landscapes to optimize water usage. These methods not only save water but also contribute to sustainable landscape management, which is increasingly vital in areas experiencing drought or where water resources are limited.

The other options, while relevant to landscaping, do not encompass the full definition of xeriscaping. For instance, aesthetic design is an important aspect of landscape creation but does not directly address water conservation. Planting only native species can be part of xeriscaping, but native does not inherently mean drought-tolerant; some native plants may still require significant water. Lastly, relying solely on rainfall for watering plants does not align with xeriscaping principles, which advocate for efficient water management that may include some irrigation depending on the conditions.