kk2017, if your outdoor overnight temps are already above 50F and higher, it is safe to be moved outdoors but position in part shade first, I find in an area where it gets eastern sun exposure is really good for cuttings. Then once those leaves are out and actively growing it can take more direct sun head on. But what you have to protect it from is rain, no viable roots, it will easily get rotted base.

But got to reiterate, to help that cutting much better, just cut off the bloomstalk so it can concentrate on root development on this first year.

You can also try providing a heating mat, so the warmth at the bottom encourages root development too if you want.

Thank you this is helpful. So I cut off the bud stalk and white fluid bled a bit. I then waited a few days and then decided that I would toss it as it looked like the stick was getting worse (shriving up), so I pulled it up and found that the stalk all the way to the end was firm... I was greatly surprised. the end looked like it was trying to sprout roots and the 3 to 4 tiny leaves still looked good, so I replanted it in a clear plastic bottle. I put about 1.5 inches of clean small pebbles (kind for aquariums) and then perlite (that I soaked then drained well) about 5 inches, made a hole and stuck the stick back in and pressed the perlite around it and topped it off with about an inch (probably less) of the same pebbles as in the bottom. I put it back under the grow light and now I wait. I'm not sure it I should put it outside even though our temperature is above 60 but is not consistent.

Bottom heat is key. Many people root on top of their clothes dryer etc.

The top of a refrigerator works too.

I have been putting my plumeria outside on the concrete and letting it stay outside until night time before bring it back in, our weather is now mid 80s and even low 90s. the leaves have continued to grow. Night temps are now mid 50s so I am trying to convince myself it's okay to leave it outside now.

My stalk just bloomed today after 2 months!! I am so excited. I brought it back from Hawaii. Unfortunately the red one, still has done nothing in the pot. I understand red ones take longer to start? If these two pictures load, you can see the difference. I am wondering if the red one is going to grow at all? It appears as though some leaves maybe forming?

Beautiful bloom! Definitely got something going on with the red, little leaf "claws" starting, the growth to is green and healthy. Like you said, reds are just shower to start. They require a bit more patience.

Reds can take up to 6 months to root.
As a good friend used to say: 'now go bother something else for a while'
Patience is key.

Thank you for sharing your picture... I'm still praying there is hope for mine. I also brought it back from Hawaii and planted it in mid April. I first got the blossom buds and very small claws. Mine was not rooted and didn't seem to want to root. I was advised to cut off the buds, which I did and since the claws have grown and look similar to yours but still no roots and leaves have not opened. So I'm wondering if it will leaf out before fall comes and it goes dormant. I love the color of your blossom!

My plumeria survived the winter (in the house) and has a small leaf. It's rooted and I wonder about repotting it into a nicer pot. Right now it's in a 2 liter cut down soda plastic bottle layered with small pea rock, perilight and a mix of orchid potting soil. I have only been watering it once a month of 2 tablespoons of water. I'm also wondering about watering and fertilizing... or not. This group has been a great support for me and I truly have appreciated your encouragement and times straight forward advice.

Now would be the right time to repot it. I suggest you cut the soda bottle off it rather than trying to extract it, as you might break the new roots.
Start watering a little bit more now, and I would fertilize once you see good new growth starting.

Thank yoyou so much for your input. I've come a long way and don't want to do something that would kill it. .. At times I feel like I'm raising a baby. What size pot and what kind of pot? Plastic, ceramic, etc?

I prefer plastic pots, and I like to go big, especially if they are just rooted and at this time of year they really like to spread their roots!