I grew a lot of my plumerias indoors over the winter.
Unfortunately with this being my 1st ever winter with my plumies, I've found some disadvantages of growing indoors.
I've now lost a total 6 plumerias. What I've discover, is that the new growth that grows indoors is very very acceptable to sun burn. Even when getting them accustomed to sun light a little each day and more each day. It seems it just doesn't want to build up what ever it is that helps protect the trunk where the new growth formed. I did try and cut off the sun burn and re-root them but somehow they got root rot and the whole trunk got soft.
So I've learned my lesson and will never try to ever grow my plumerias indoors over the winter time again.