Re: Fertilizers for Florida
A lot of the palm fertilizer that is sold in Florida is 8-2-12 + 4Mg and it should perform fine for you. Being on sandy soil I would strongly recommend using composted manure. You might have really good luck using fish hydrolysate as well. The key with sandy soil is not putting out all of your fertilizer at once. You are probably looking at putting out 8-9 lbs of fertilizer per mat per year. Depending on how warm it is where you are I might consider only fertilizing in the winter if you get a lot of rain. Otherwise 1 lbs per month March-November and during the rainy season I'd think about putting out 1/4 lb per week because if we get 4-5 inches of rain one week you will lose all the fertilizer.
Some people go bananas, I went plantains.