Rooting a Plumeria cutting is quite simple.
The most important things to remember are:
* Keep the soil warm. Place the pot you are using to root on a hot surface like concrete in the sun (driveway, etc)
-In cooler areas use a seedling heat mat or something that stays warm.
* Don’t overwater. Water it once when you first plant the cutting (preferably with some rooting solution) and then keep it quite dry after that. Wet soil will promote rot- dry soil promotes rooting.
*Don’t overpot. You don’t want the cutting in too much soil. Just use enough to hold the cutting upright and stable.
* Use a very well draining mix and a draining pot. You want a quick draining mix like sandy cactus mix or fine bark mulch. Avoid heavy soils like peat moss or anything that holds alot of water.
For detailed instructions on rooting a Plumeria cutting- refer to these informational sources: