Hardiness of Pinellia cordata
Roy Herold (Mon, 01 Jun 2009 19:47:29 PDT)

I grow the same Pinellia cordata clone ('Yamazaki') as Ellen, and have
found that none of the ones that I plant intentionally persist for more
than a year or two. However, the volunteers that fall out of pots or get
moved by the local vermin have found several sweet spots in the garden,
purely by chance. I have one such clump with a couple of inflorescences
open as I write. There are numerous instances of the odd leaf here and
there, too.

I winter over the ones in pots the same way as Judy, either in the
freezing garage or under the bench in the cool (38F) greenhouse. They
seem to be doing *very* well in the mild spring we've been having. There
was a quick hot spell a month ago to get things going, and warm to
downright chilly (39F last night, June 1) since then.

I vote for trying a few outside in NJ, but find some vermin to plant
them for you...

--Roy
NW of Boston
-7F last winter