Technical Abstract: Avocado, which belongs to the genus Persea, is native to the New World and most agree that the cultivation of this plant by man, in Mexico and Guatemala, is very ancient. At present, however, avocado pollination is complicated by several factors, and in this article we outline a project directed at increasing the pollinator base in Southern California avocado which involves three distinct and complementary activities. First, it is important to improve our understanding of the reproductive biology of avocado. This is a necessary step to develop methods to measure pollination levels in any particular grove and to establish the pollination efficacy of different insect pollinators. Second, it is necessary to study the pollination ecology of avocado in its biogeographical area of origin (pollinator surveys, pollination frequencies, pollen loads deposited on the stigmas, etc.) and to compare this information to similar surveys conducted din commercial avocado production areas in Southern California, with the idea of determining whether the same or substitute pollinator species are already in place. If such species exist in or nearby to commercial production areas in the U.S., further investigations will be necessary to determine the extent to which populations of these species could be increased through manipulations by man, a process that will take several years to complete. The third area of endeavor is the assessment of commercially managed non-Apis pollinators, namely bumblebees, leafcutting bees, and mason bees. Any of which, if results were encouraging, could provide supplemental pollination for avocado growers, while management systems for more well-suited pollinator species were developed.