Cold Damage

[char68paul]

My orchids, mostly phals and dendros were exposed to the 27 degree low we had in Jan. Part of the roof on the shade house blew off. Anyway, at least 1/3 suffered serious damage.
My question is has anyone had phals come back from the roots? The roots appear to still be alive. I pulled a couple out of their pots and I found healthy roots. I am wondering if they are just dying slowly at this point and not really ever coming back.