Monroe County Reminds Waterfront Owners of Mangrove Rules

Monroe County issued a reminder on December 17, 2025 that all mangrove trimming and management along navigable waterways falls under the Florida Mangrove Trimming and Preservation Act. The county emphasized that while some routine trimming is allowed for property owners, specific limitations apply and activities beyond those limits require either a permit or the services of a professional mangrove trimmer.

Under the guidance, homeowners may trim mangroves within a Riparian Mangrove Fringe up to 10 feet in height provided trimming does not remove vegetation below six feet. When mangroves exceed 10 feet in height, or when mangrove stands lie outside a Riparian Mangrove Fringe, the county advised that a professional mangrove trimmer or an appropriate permit is required before work proceeds. The reminder also encouraged property owners to schedule trimming during the recommended season between October and March.

The Department of Environmental Protection maintains a Monroe County Branch Office to assist residents with questions about permits and professional mangrove trimmers. The office phone number is 305 289 7070. Property owners planning maintenance were urged to contact that office to confirm whether their planned work falls within homeowner exemptions or will require additional authorization.

The guidance has immediate implications for homeowners, marina operators, and recreational boaters across Monroe County. For shoreline residents, understanding the height and clearance limits can prevent inadvertent violations and unnecessary delays in routine maintenance. For waterfront businesses, compliance ensures that navigable channels remain safe while protecting mangrove habitat that contributes to shoreline stability and local fisheries.

By restating the statutory standards and providing a clear point of contact, the county aimed to reduce confusion ahead of the winter trimming window. Residents with waterfront property should review their plans, confirm whether their mangroves qualify as Riparian Mangrove Fringe, and call the FDEP Monroe County Branch Office at 305 289 7070 for permit and professional trimmer information.