All plants need water to survive. However, like plants that require more water, there are plants that grow in lack of water. They are the best drought tolerant plants and can live without water for a long time.
Hosta (Hostaceae) – Shade tolerant plants These hardy herbaceous perennials are easy to grow and are popular in any garden space. Hostas are beautiful plants that come in a variety of shapes, sizes and colors.
Astilbe is found in shade and woodland gardens. They are clump-forming perennials that feature graceful, fernlike mounds with erect to arching, plumelike flower panicles rising above foliage on slender, upright stems.