I think that you sound like a lovely person, and I think that YOUR skills will be what is needed in the future. That said, nothing succeeds like success, and I would recommend that you do something (really anything you can think of) that is "normal" so that your relatives can recognize it and relate to it in their closed world. Perhaps you could write a book on your adventure in gardening or perhaps even a newspaper column? If the relatives see you becoming an "expert" in your field, they will probably even become proud of you.

I'd turn the tables on them in that way. If you become uber successful in your alternative lifestyle, you can even publically complain about the lack of support that you received in the beginning from you family and that would make them feel ashamed.

Enough daydreaming - now get to work and make it happen!