I'm a newbie here, but from what I've read so far is that plumeria's don't necessarily bloom every year, often every other year, if that often. Also from your description, it sounds like the type of fertilizer you use has a balance that promotes stem and leaf growth over flower production. I'm sure some other more experienced growers will chime in here with more specific info.

how large and old are your plumies? until they're more mature they won't flower every year.

Azmom, it's almost impossible to identify a variety based on appearance. There are dozens of named plumeria that fit the descriptions you've given us. A picture might help, but since plumeria flowers can vary a lot according to growing conditions, it's still hard to say.

Del and Houston are right. Sounds like the yellow bloomed and is taking this year off to put on some more growth. Next year it should bloom on those new branches. If it's healthy and mature enough it will bloom.

Thank all of you very much for the responses.

I have both plants for more than 3 years. They both are about 5 feet tall. They had same size of leaves until I moved the yellow one to a bigger pot. Its largest leaf now is about 16 x 5.5 inches long does not count the length of leaf stem. The average leaf of the pink one is about 11 x 3 inches.

May be the potting soil I used encourages stem and leave growth as DelWH suggested? Should I start fertilize them when the weather gets cooler?

no need to wait for cooler weather. for my potted plants i fertilize at half strength once a month when its warm/hot (march thru oct for me).

Houstontexas123, What kind of fertilizer do you use? The temperature we have now is above 105 degree F. during the day, and Night temperature is 85 degree F. Is it too warm to use fertilizer?

Thank you.

You really want to fertilize spring through fall and let them rest in the winter. If you encourage new growth as the temps start falling you run the risk of tip damage. Rule of thumb for most of us is stop fertilizing by Labor Day.

They don't actually like triple digit temps, so perhaps giving them a break in high summer would help. If you nest your black plastic pots in larger ceramic pots the roots won't get too hot. Otherwise, it's just a matter of time. Unfortunately they require patience.

I'm looking at a single branch plant now that's four-feet-tall and still hasn't bloomed once for me. Like yours, it has gorgeous leaves and is obviously healthy, but not ready to flower--not unusual.

my current daytime temps are around 95-98, and night times are around 79-82. i use the plain Miracle Gro fert. i've never heard of being too hot to fertilize. as long as your plumies are healthy and growing and getting plenty of water, you should be fine giving them some fertilizer.