I have a Plumeria that has so many infos I had to stake it and tie it up so the branches would not break. The branches are only about 1" in diameter. It is August 19 and I live in the Outer Banks of North Carolina. I need to take cuttings, but would like to try air rooting so I will not lose the inflos. I have a small green house and the plumeria is getting to tall to move it there this winter. Do I have time to try air rooting?
Plumeria number 2 is also very tall and only has 1 inflo. It had 8 seed pods this past year, but no seeds were viable. The Plumerias were moved inside my garage, but I think it was too cold for the seed pods. I was very disappointed because I have given away over 60 seedlings from my parent plants. I lived in southwest Louisiana then and had a sunroom were the plants lived when temp got below 50.
The third plant got damaged. One branch got a gash in it but I left in alone in hopes the branch would get longer so I could take a cutting. That damaged branch now has an inflo starting. I think it would be a good specimen for air rooting. Please advise on these three plants. I have added images of the three plants.
First photo is the plant with only 1 info, second photo the plant with numerous inflos and last the damage branch plant.

I have only done air layering on hardwood but it sounds risky if you have not done this already. Your average date of first frost is around weeks 2-3 in November so the air layering would have to yield good results very quickly. I had an acquaintance who complained of having to wait, I think, 3 months for signs of root development; not sure whatever happened with that until you mentioned it in this post. Also, by Nov or earlier, the plant may start going dormant, not sure when in NC.

Thank you for your reply luis_pr. I do have a green house that would give the plants some sun in winter.

Air layering takes about 3-8 weeks. My question to you is, what can it hurt to try? There's two scenarios where you possibly lose the inflos. You take cuttings now, or the air layering doesn't take before the plant goes dormant. Either way, same result. Or you could try air layering, and have success. Pretty much up to you. You do however, want to take cuttings while the plant is actively growing. Not when it's dormant. Good luck!

Thank you Teamcll for your reply. Good point: It will either work or it won't. I have eight plants now. Two parent plants & cutting from each parent when I thought I was not going to be able to move them from La to NC. Un potted the parents & wrapped the root ball with some soil in moist burlap & moved them in our van. They continue to bloom. Have two plants that are seedlings from the parents. The two other plants are rootings from a broken branch on one of the plants. I hope the green house will keep them from going dormant, but probably wishful thinking. Thanks again.

Good luck to you! I keep plumeria in a greenhouse all winter, but mine is heated to 50 degrees. They remain actively growing for me. No dormancy.

Plantmanager, Wow! that is great. I doubt I'll be able to keep 50, but will try to keep them growing.

Maybe you could cover them at night inside the greenhouse if the temps are going to drop a lot. You can also use black drums of water to heat up in the day and then give off heat at night. Try to think of all the ways to get or keep heat.

Thank you PlantManager, Good Idea.