Florida has more than 4,200 plant species growing outside of cultivation, according to the Atlas of Florida Vascular Plants. Out of those 4,200 species, nearly 3,000 are considered native. The majority are terrestrial plants: they live on dry land. There are also hundreds of aquatic plant species that live in damp or wet soils or in the water. In the U.S., only two other states have more plant diversity than Florida.
The Florida Native Plant Society (FNPS) defines Florida native plants as
. . .those species occurring within the state boundaries prior to European contact, according to the best available scientific and historical documentation. More specifically, it includes those species understood as indigenous, occurring in natural associations in habitats that existed prior to significant human impacts and alterations of the landscape.