Here is the key, if a fruit or vegetable does not produce seeds, then you can growth them by "spores, hijitos, suckers...", or by slicing a new growth off the plant. Non-flowering plants such as ferns and mosses don't need seeds. Instead, they produce spores, hijitos, suckers.... Lots of experimentation, an inexpensive and wonderful pastime.
I usually put it in glass with rain water, also add some "compose tea" I use rain water to begin because there are not man made chemicals in rain water,- I collect rain water in 55 gallon containers, I have only two, but enough for me. It is probably my imagination, but I found that when I use rain water the roots are healthier and fast developing.