Though he discovered & named Florida in 1513, he didn't try to colonize it until 1521
In late March of 1513, he landed on the east coast of 
Florida near ... the Florida keys until he arrived at an island with a lot of turtles, De 
Leon named... [DOC] [TLE] Exploration of North America - Exploration - HISTORY.com [PAR] Ask HISTORY: Did Columbus Really Discover America?