Thanks Ken. Your input was very helpful. I see that we're in the same Zone and this Winter we've experienced some much cooler temps. So I wasn't sure if the cuttings could remain outside. I purchased a heat mat because of other articles I've read, to place my cuttings (in perlite) on, which some said, would stimulate the rooting process. After roots and leaves appear I plan to grow my first few cuttings in large pots. Eventually I will be brave enough to plant new Spring/Summer rooted cuttings in the ground. At that point, what kind of ground soil/ mixture should I plant them in?

Yes, though I've only been through 3 winters here in Vero, this winter has been far colder than the previous three.

I have about 30 plumeria in the ground now, 24 varieties. I custom make all my potting soils (including orchid media), so I've always got lots of potting soil made up. I amend all the (yard) soil with this potting soil, about 2/3 natural soil + 1/3 potting soil. Also, Dev, be very careful that your in-ground plants are not below the soil-line. I do quite a few of mine in slightly built-up beds, higher than the surrounding soil-line, just to make sure they drain well. I learned the hard way.........LOL