The cozy mystery series, The Marcia Banks and Buddy Mysteries, is set in the fictional town of Mayfair in Central Florida. Some of the other locations mentioned in the stories are made up. while others are real places that are used fictitiously.
The Ocala National Forest is a real national park. Quite a few private citizens live within the confines of the park. And it’s advisable that those not familiar with the Forest not wander too far from the paved roads.
The Forest is full of thousands of Southern pines. These are tall spindly evergreens that can live in sandy soil and survive both droughts and hard freezes (which Central Florida does have occasionally during their otherwise mild winters).
What eventually does these trees in is either wildfires or high winds that blow them over (one in our backyard took out our electric wires during a tropical storm the first summer we lived in Florida).
Another reason to be careful about where you go in the Forest — you may encounter a black bear or gator.
Florida is fairly close to sea level, so we have lots of lakes and swamps, and they have lots of alligators also.

On a sweeter topic, a Magnolia Blossom (photo by Donald (Donnie) Pardue CC-BY 2.0 Wikimedia Commons)
Of the two settings in Lord of the Fleas, Crystal County is fictional (it is also the setting of To Bark or Not To Bark). The other is the real town of Williston, where Becky and Andy live, and where Marcia stays while training the veteran in that story.
Two real places mentioned in the book are Bubbaque’s restaurant and Dixie’s Antiques.