NARGS
Ernie DeMarie via pbs (Wed, 14 Oct 2015 15:25:28 PDT)

Hi Calvor,
Many years ago I got some seed from the late Charles Craib. Silverhill and Lifestyle seeds both offer it at times as well. As a pot plant it wants a dry winter dormancy, can go outside when it warms up. Under glass (when I worked at NYBG, where they still have potted plants I started) it is susceptible to spider mites but that isnt so much of a problem outside.
Ernie