ptible to disease infection by providing the surface moisture needed by fungi and bacteria. Of course, if your community imposes restrictions on water use, ideal watering practices may not be possible. If your community is under restricted water use, it is certainly better to water when permitted than not water at all.
Household gray water, such as that leftover from the bath or washing dishes can be used, within limits, if fresh water is not available. Detergents in gray water contain salts that can accumulate to harmful levels in the soil. Use gray water only as a last resort, and use it as sparingly as possible to avoid salt build up. Never use gray water on edible crops or on containerized plants.