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.
Pinner says: A purple fountain grass that is perennial (comes back every year). ‘Vertigo’ grass from Proven Winners is even more striking than fountain grass. Reaching to tall by wide, ‘Vertigo’ is heat loving and long flowering.