I don't have anything useful to say, just wanted to share my experience, this winter. Stella de Oro didn't go dormant, as well as the supposed dormants.. A couple of SEV went almost dormant, this is a pic I took today, I can't read the name of it anymore so I'll have to wait to see it in bloom to know which DL is.
I have almost all plants with green foliage and brown leaves all around, with new growth and new fans coming up.
We had some freeze at night the past week, we registered 19 F (7 below zero C), now temps are above 0C but forecast say we'll get freeze again. I guess the poor DLs are going crazy with this strange winter!