Q.Potted plumeria 4 years old no flowers
We have been growing a plumeria from cutting in a pot in Chicago believe it or not. It is tall as can be now ( 3-3.5 feet). We give it high phos fertilizer in the summer and cut it back when we bring the plant indoors for winter. In the summer it is on a very humid and hot enclosed patio. We just cannot get this thing to flower. Any tips? Also, any advice for what to do when this thing is too big to pot and move (very soon)
Thank you

Your plant should be mature enough to bloom. Correct fertilizer and application timing is important.
This article will help you.
https://www.gardeningknowhow.com/ornamental/flowers/plumeria/growing-plumeria-cuttings.htm