Red plumeria

Question

My plumeria has been in the ground for three or four years; we live Inland North County San Diego. The only branch on my plumeria has a shriveled area in the middle of two seemingly healthy areas. It started showing leaf promise a couple months ago but hasn’t progressed any further. We had several blooms and leaves last year and were very hoping to have more this year.

Answer 1

I'm listing several articles that will help you access the growing conditions.

https://www.gardeningknowhow.com/ornamental/flowers/plumeria/how-to-fertilize-plumeria.htm
https://www.gardeningknowhow.com/ornamental/flowers/plumeria/plumeria-pruning-info.htm
https://www.gardeningknowhow.com/ornamental/flowers/plumeria/growing-plumeria.htm