Pomegranate trees are self-fruitful, which means the flowers on the pomegranate are both male and female. Pollinating insects and hummingbirds assist in spreading the pollen from flower to flower. You can even help too, by using a small brush and lightly brushing from bloom to bloom. Male pomegranate flowers fall off naturally as do un-fertilized female blooms, while fertilized female flowers remain to become fruit. Plant Growth Regulators like ethrel and maleic hydrazide induced more hermaphrodite and fewer male flowers. Optimizing cultural conditions may be a means to promote the development of greater numbers of bisexual flowers with high vigor to obtain maximum fruit set and yield.