I don't know where you are in Jersey, but there are a few very very good bonsai professionals closer than Tennessee or the West Coast that might offer an alternative. For instance, Chase Rosade has his bonsai nursery in New Hope, Pa. (near Philly) offers classes. Chase has been a bonsai professional for longer than Bjorn and Ryan have been alive and trail-blazed the path to American bonsai professional long before them. Bill Valavanis in Rochester, N.Y. is another American bonsai legend with a long career in the art. Might be worth a visit to see both places have a look around at their professional bonsai nurseries and get acquainted with some of their students.
Learn about the fascinating art of bonsai trees at Rosade Bonsai in New Hope, Pennsylvania. We offer bonsai classes, maintenance, workshops, and boarding. Pure excellence in bonsai for over 50 years.
www.rosadebonsai.com
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Both of these artists, although not as "fashionable" or flashy as Ryan or Bjorn, are resources that shouldn't be overlooked and you're in their backyard.
As mentioned the National Bonsai and Penjing Museum here in D.C. offers an apprenticeship program.. It is supported by the National Bonsai Foundation. I don't know what the competition is like to get into the program, but it's worth looking in to. I'd do some research into the backgrounds of past apprentices to see what experiences they have.
www.bonsai-nbf.org
Clubs are also a great way to get a deeper connection to the bonsai business (the business end of being a professional bonsai artist is arguably more important than learning bonsai techniques).
If you want to head down this kind of career path, a foundation in horticultural sciences will go a very long way. I'd keep that in mind as you make your way through high school and college. A degree in horticultural sciences can offer many paths that can include bonsai and other career opportunties that you probably haven't thought of, but might find equally rewarding..