I wanted to know if it would be a futile attempt to plant two 5 gal fig trees in the ground. The soil is like 80% sand and I am assuming there are nematodes in the ground. The location is SE FL, any tips or success stories?

I would first test for nematodes to determine the best route. 

If they are in your soil and the neighboring soils you may not have many options. 

One option is to "bake" (or some other term I can't remember) the soil for a summer then plant "Guardian" marigolds under your tree every year.  Worth a try to get some figs. . .

Well I wanted to plant these out in 2 weeks time frame. So soil test would take some time, I am assuming there is nematodes because its sandy soil and its in FL. It sounds like having figs in ground would be not worth while. Perhaps I will just grow them in containers.

Nullzero,

I'm in central Florida and put all my plants in ground, i'm in pure white sugar sand loaded with nematodes and have no trouble what so ever.  Nematodes like hot dry organic deficient soils.....so give them what they don't want....organic rich cool moist soil.  The key is mulch.....lots of it and deep 10"+ 6' across.  It keeps the soil cooler.  It keeps the soil moist.  As it breaks down it adds a ton of organics to the soil.  The nematodes will avoid you like the plague.  It does take the mulch time to break down though so you are better off waiting 6 months after you put the mulch down but you could buy amendments to speed the process up so you could plant right away.  Free mulch is available in many cities and counties and another way and the way I get it is from my local electric company.  It is the trims from the line work.  It is great as it is mostly tops and leaves so has more Nitrogen in it so breaks down faster.  Not only is it free they deliver:)  

These figs were started in Nov and planted outside in the ground March 1. and are now over 6 feet tall with figs on them.   

WillsC,

Thanks for the great information. The location is PSL and the lot has sugar sand with Bermuda grass. So maybe I can look forward to planting out in the spring when lots of organic matter is added.

You may try shrimp or crab shell as compost. They are made of chitin, same material of fungi wall and nematodes skin.
http://homeguides.sfgate.com/can-shrimp-peelings-composted-78498.html

Jimmy,

Thats a good article about shrimp shells. I have been told previously to use shrimp meal for similar reasons. 

Now I know I can use all the crab shells I get after crab pickin'.

Yes, that's a good test.  Thanks for the info.