Went to Harris's Hideaway at Lake Harris yesterday and they have many feral banana trees fruiting (at least two different varieties) all over the place by the boat dock. I was not able to hunt/dig up any, let me know if you go
Not for the faint of heart- spiders everywhere and real FL thick jungle. Also, be aware, there was a good sized macaque monkey there as well- first time the local regulars had ever seen him. Pretty cool