Greywater is water that has already been used for something else in a residential or commercial setting. Bathtubs, showers, sinks, and washing machines are common sources of greywater. Reusing a portion of this water in the garden is a practical way to conserve freshwater resources and reduce overall household water consumption, especially in regions facing increasing water scarcity. In this article, we’ll cover the basics of greywater use in the garden, how to apply it safely, and key considerations to help you navigate what can be a complex but highly useful area of sustainable gardening....