Arum pictum, was Tropaelum azureum etc.
Jim McKenney (Wed, 16 Dec 2009 13:09:40 PST)

Paige, in one respect this is encouraging; but in another respect it's
confusing: how is it that they would not freeze in zone 6? Did you mean that
the deeply planted corms/tubers (more about this in a separate post) do not
freeze? Surely the foliage freezes repeatedly in a normal winter?

This repeated freezing and thawing of the foliage is a big problem here:
plants subjected to these conditions become weaker yearly until they are
gone for good. Also, the frozen foliage is very prone to mechanical damage.

I'm going to try a piece of my plant in the open garden eventually.

Jim McKenney