Since the Sycomore fig is another edible fig species, I too have an interest in this plant. For many of us there is less chance of getting fruit unless we live in a warmer zone. I am particularly interested in a variant of the Sycomore fig that is found in Israel that is becoming more rare.
The Sycomore fig normally requires pollination by the wasp for the fruit to mature but there are two exceptions. There is an ancient method called "gashing." At the appropriate time, someone would make a cut on the outside of the fig and this would induce the production of ethylene gas and cause the fig to ripen. This is especially important in areas where the wasp that was specific for the sycomore fig did not exist.
The other way that the sycomore fig would make fruit involves a special strain of the sycomore fig that grows in Israel. This fig will ripen its fruit without the wasp and without the "gashing" technique. This is called vegetative parthenocarpy. I would love to have a start of this variation but it might be an impossible task to find these trees. (please let me know if anyone is aware of these clones in North America)
I have been told that there is a "red" and "green" clone in Israel that produces fruit. I am not aware of any variety names and am not sure what the "red and green" means from this particular contact person.
Here are some articles that might be of interest:
3) There are many scientific papers written by J. Galil that address this issue if you are seeking more information.
Ingevald