@marlboromaam perhaps this is your answer: "Around 1912 the main industry due to the great climate was growers planting ferns. It affectionately was called "Fern City". As the area began to expand and various other tropical plants were being planted by the growers, it wasn't long before the other foliage outgrew the fern industry and Apopka was then known as "The Indoor Foliage Capital of the World".
I have been wondering where the Caladium Capital of the World was. Nice photo by the way. The real dirt in the foreground adds a touch of reality to the mural.