Welcome to NGA, Rudi.
I am anything but expert here, but I grow lots of plumeria and began growing from seed four years ago. When my seedlings are 3-4" tall, with 4 leaves, I will pot them up in 2" pots. Generally, they will be moved to 3-4" pots in 4-6 wk. after that.
If you got every seed to germinate you have done something that I have never achieved, Rudi. Congratulations.
