Oops. I did not repot in spring. I saw this thread and popped in, my plumeria are plunged in the ground, I pull them out and put them in garage when it's cold but this year didn't do any repotting, they don't seem to care but have not flowered ever. So I'll just do my usual routine this fall and repot next spring. Does that sound okay?
@simonli94
I consider myself a newbie to plumeria even tho Ive been raising some for 3 years: two plants that I bought as sticks and several plants raised from seeds. I have done my best and only lost two plants, never figured why. But what seems to work best is lots of outdoor sun in summer and some neglect. They seem happy when they have periods of drought, at least when plunged in garden. They also seem to like the "company" of other plants that shade their roots. Just my observations.