View All Parks Director's Message

Dagny Johnson Key Largo Hammock Botanical State Park

 About Dagny Johnson Key Largo Hammock Botanical State Park

An aerial view of Dagny Johnson Key Largo Hammock Botanical State Park.


Previously known as one of Key Largo’s “best-kept secrets,” this park has become a favorite of locals and tourists alike. Winter months make it a perfect excursion with mild temperatures and no mosquitoes. Visitors quickly become stewards for the environment, as it is home to 84 protected species of plants and animals. Created to protect the unique status as a tropical hardwood forest in the United States, the park’s focal point is a self-guided nature walk or bike ride along the main trail. At the “circle” one will find a native plant butterfly garden and a picnic table (please pack out your trash).

The Port Bougainville Trail consists of a two-mile loop trail which has a half-loop option. Additional backcountry trails in the northern section of the park may be explored simply by completing a backcountry permit at the John Pennekamp Coral Reef State Park Ranger Station.

Visit, explore, and enjoy the park today!


The Great Florida Birding Trail Logo


  • The main entrance and marked nature trail at Dagny Johnson Key Largo Hammock Botanical State Park is located on Monroe County Road 905, approximately .5 miles north of County Road 905's intersection with U.S. Highway 1 at Mile Marker 106.


  • For forms, information and benefits of volunteering visit Get Involved.



  • Florida State Parks Pet Policy
  • Pets are permitted in the picnic areas, along the sea wall, bike trails and hiking trails. Service animals are welcome in all areas of the park, as required by law.