I've had my say, take it or leave it. I do have a bit of experience growing plumeria and many other tropicals, and though that experience has always been in the Deep South, I've grown them in temperate as well as subtropical conditions. I sort of chuckle when reading some comments. I wonder what experience growing tropicals some people have that do some of this commenting. I've logged over 50 years of this sort of growing, 1000's and 1000's of tropicals.
I couldn't agree with you more, Gina. My soil here in Vero Beach is just like yours. We got almost a half foot of rain a couple of days ago. All the low areas around the house (and the street) were literally under water. Fifteen minutes after the rain slowed, there was absolutely no evidence that we had "flooding". None. Sand and crushed shell is our basic "soil".