Lots of flowers but no pomograntes ... why ?

I live in the SFbay area. I have two trees which I thought they are pomograntes. Every spring, I see a lot of flowers ( really lots of them ) but no fruits. Any ideas what to do to get the fruits ?

Lots of flowers but no pomograntes ... why ?
Pomegranates prefer a semi-arid mild-temperate to subtropical climate and are naturally adapted to regions with cool winters and hot summers. A humid climate adversely affects the formation of fruit. The tree can be severely injured by temperatures below 12° F. In the U. S. pomegranates can be grown outside as far north as southern Utah and Washington, D.C. but seldom set fruit in these areas.



Pomegranates need full sun and around one inch of rainfall per week for fruit production. Full sun means at least 6 hours of shadowless sunlight.



Your tree may also need some fertilization. Often a plant that is deficient is capable of supporting leaves and sometimes blooms, but will not have the energy to develop the fruit.



There is one other thing that you might want to consider.

Some varieties bear no fruit and are used exclusively as ornamentals. Has this particular tree ever borne fruit?

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