Hi all, I have some new information about 17, Chlidanthus fragrans, that I found in an old Zephyr Gardens catalog (T.M. Howard) that Jim McKenney so thoughtfully shared with me. T.M. Howard said they needed to be planted very deeply to avoid over-multiplication. So if you get these from the BX, plant them deeper than you would otherwise think necessary, exactly how deep I cannot say. Regards, Jay Yourch Central North Carolina, USA (USDA Zone 7)