Hi Nan,
I am new here but am going to welcome you back anyway.
I tried looking up columneas but could not find what they were either on the plant database here or on the internet. I too, lost a lot of my plants over a dire situational depression. I am coming out of it now and I don't know how many plants I have now either. I lost one braided Lucky Tree because the heat blew right on it and I didn't see it until it was too late. Sigh!
So I am enjoying my fur kids and finned kids and plant kids.
Hope to talk to you later,
Leda