James,
I grow many Bletillas, but not 'Kate'.  I have looked it over on some websites, but just haven't taken the time to order it.  I do grow Bletillia striata 'Big Bob', and that seems to be the standard for striatas.  In my area (zone 8b), Bletillas can be grown in the garden, and only need to be protected when they put out new growth prematurely, before all the freezes have finished.
Glen

Do you grow Bletilla s. 'Kate'.?  This is a new cultivar that
is promoted as having more and larger flowers. I bought a couple this
spring and flowers are typical, but it has rebloomed on new growth
and even now has a few flowers in bloom. None of my other typical
Bletilla bloom after a brief spring period. I am hoping they will
prove hardy as typical.
Are you familiar with this or the similar 'Big Bob'?
Best        Jim W.
--
Dr. James W. Waddick
8871 NW Brostrom Rd.
Kansas City Missouri 64152-2711
USA
Ph.    816-746-1949
Zone 5 Record low -23F
Summer 100F +