If you live in an arid or dry region you might consider creating a paradise garden.   The most basic feature of paradise gardens is that they are enclosed by walls or other structures.  This helps make this type of garden water efficient.

This type of garden evolved as a way to have a lush garden in desert or semi-desert climates.

The Paradise garden is a form of garden, originally just paradise, a word derived from the Avestan language, or Old Persian. Its original meaning was a walled-in compound or garden; from pairi (around) and daeza or diz (wall, brick, or shape). The name has come to be commonly used in English and other European languages as an alternative for heaven. Because of the additional meanings for the word, the enclosed garden of the original concept is now often referred to as a paradise garden.

The Taj Mahal is an elaborate paradise garden. You can make a smaller version for your home.