On 17/04/2018 22:09, Jeff Layman wrote:

If the roots of a cordyline have rotted, it is possible to cut it off
above the rotten part, and reroot the upper section. It will take some
time to root, but it can be done.

I lost some cordylines this past winter (that have survived many
winters). It was the wrong sort of snow and it stuck onto the growing
head and seems to have killed them stone dead. I am leaving well alone
in the hope that they recover from the roots but I am not optimistic.

I remember looking at the snow pom-poms on their tops and thinking it
might either protect them from the hard frosts or finish them off.
I fear it was the latter. Cross fingers and wait...

--
Regards,
Martin Brown