Xeriscaping and xerogardening refers to landscaping and gardening in ways that reduce or eliminate the need for supplemental water from irrigation. It is promoted in regions that do not have easily accessible, plentiful, or reliable supplies of fresh water, and is gaining acceptance in other areas as climate patterns shift.

The word xeriscaping is a portmanteau of xeros ξήρος (Greek for "dry") and landscaping, and xeriscape is used for this style of garden. Xeriscaping refers to a method of landscape design that minimizes water use.

Many Denver Water employees helped coin the term xeriscape, and Xeriscape and the xeriscape logo are registered trademarks of Denver Water, the water department of Denver, Colorado.

In some areas, terms such as water-conserving landscapes, drought-tolerant landscaping, zeroscaping,^{[citation needed]} and smart scaping are used instead. Plants whose natural requirements are appropriate to the local climate are emphasized, and care is taken to avoid losing water to evaporation and run-off. The specific plants used in xeriscaping depend upon the climate.