Plants used in a garden can make a large difference to water consumption. Plants should be chosen based on:
We have been taught to remove native plants, often viewed as "weeds" and to replace them with plants that are common in the nursery industry - plants that we will refer to as "industrial plants." The industrial include the standard ornamental shrubs and perennials and are promoted based on the function they provide (hedge, groundcover, etc.) and/or the aesthetic they exhibit, yet not for ecological reasons. They are mass produced and distributed widely, the same way consumer goods are mass produced and distributed. As a result, landscapes, whether residential or commercial, typically have the same plants and the same appearance, regardless of where located.
We would like to encourage you to select native plant that grows naturally at the site. Since native plants evolved to grow under local conditions, they do not require that the site be changed or soil be replaced. They do not need the life support of watering, except during establishment or regular synthetic chemicals - they do not require fertilizer beyond that provided naturally and they are not prone to the diseases of many industrial plants.
Use the opportunity of the garden and label native plants and herbs growing in the garden and inform customers of how they are used in food and beverage, for example, herbs in cooking and mint in cocktails.
There are many benefits:
Source: http://www.plantnative.org/how_intro.htm