Abstract: Karnataka is blessed with a variety of bee flora and different types of agro climatic zones. Beekeeping is becoming an important component of present strategies for sustainable agriculture and integrated rural development programme. The indigenous flora available in the different ecological habitat is of great importance to the apiculture industry in terms of honey and crop production. Insect pollinators are more sensitive to floral rewards and forage only on these flowers from which they can maximize the energy gains. India is a vast country, the climatic and floristic conditions therefore vary from tropical and sub-tropical to temperate conditions. The foraging efficiency of honeybees depends on the bee forage, conditions of the colony and foraging range of worker bees. Study on the foraging activity of bees in exploiting the bee forage in a locality depends on the climatic conditions which is highly variable from place to place. Change in the availability of bee flora as a result of weather and pollution probably affects the beekeeping. This paper discusses the pollen diversity in A.mellifera and its quantification in different habitats of Karnataka.