David, cuttings will always produce exactly the same plant/flowers as the "mother" plant from which the cuttings were taken. Unless one has laboratory conditions when hybridizing, those plants grown from seed will always be "surprise" plants and flowers. They may be similar to the seed-pod parent but you just never know.
Plumeria are deciduous plants and even in the tropics will go through some dormancy. Because of our cold fall/winters here in Mississippi, all my plumeria have to come inside and will remain inside for 4-5 months, leafless and dry. They will be completely dormant. Perhaps in your climate, plumeria can stay outside year'round. I would not want mine to be subjected to temperatures below 40F, at least for extended periods. These are tropical plants and won't take heavy frosts or freezes.
