Do you want a garden that is low maintenance, requires little watering and the pest problem is like nill? then xeriscape is the direction that you would want to head in. Also if you want to plant a garden but your concern is the increase in your water bill, then xeriscaping is the garden for you.
The advantage of this type of garden is water conservation but the disadvantage is there are only a certain variety of plants that meet this type of garden requirements. You may have to choose plants which you are not too happy about. Your selection must be plants that are drought tolerant or as we said a bit earlier, plants that require very little water.