How does FNGLA define drought-tolerant plants?

The correct choice describes drought-tolerant plants as those that can withstand dry conditions and require minimal irrigation. This definition is essential in recognizing the adaptability of certain plant species to survive and thrive in environments with limited water availability. Drought-tolerant plants have evolved specific traits that allow them to conserve water, minimize evapotranspiration, and use water efficiently, making them suitable for gardens and landscapes in arid or drought-prone regions. Understanding this definition is crucial for gardeners and landscapers looking to create sustainable and low-maintenance environments that require fewer resources, particularly water.

The other options do not align with the concept of drought tolerance. For instance, some plants that grow best in wet conditions or require regular watering and high humidity do not possess the characteristics needed to thrive under drought conditions. Similarly, plants that thrive in shaded areas may have adapted to different environmental conditions that do not focus on drought resilience.