| I'd start with Helene at Briggs Hill with your question. Of course someone on the forum might see this post and have a response eventually as well. I'm personally still working on figuring out how to grow the more common types myself. There are a number of online vendors that I have noted list various plants with the word "rare" in the descriptor. After talking with Briggs Hill post again if you are still looking and maybe someone can do some research for you. Good luck - mike |