Gray water is the non-toilet wastewater from your home, including water from tubs, sinks, showers, dishwashers and washing machines, according to the University of Massachusetts Extension. Gray water can be used on ornamental plants and shrubs. If used in a vegetable garden, do not apply it to leafy vegetables or root crops. Rotate gray water with fresh water to avoid a buildup of sodium salts from soaps and detergents.
About this Author
Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.