Home / Environment / Everglades Invaded: Australian Tree's 100-Year Ecological Assault
Everglades Invaded: Australian Tree's 100-Year Ecological Assault
31 Jul
Summary
- Melaleuca seeds were first scattered from an aeroplane in 1936.
- The Australian tree now infests nearly 500,000 acres of South Florida.
- Eradication is no longer realistic; focus is on suppression and control.
Introduced to Florida in the 1880s, the Australian melaleuca tree was deliberately spread to drain South Florida's wetlands for agriculture. By 1936, seeds were even dispersed via aeroplane over the Everglades. This invasive species, aided by its rapid growth and lack of natural predators, eventually infested close to 500,000 acres.
Melaleuca's aggressive spread has severely impacted the Everglades by altering water flow, changing fire behavior, and displacing native vegetation. It significantly reduces habitat and food sources for native wildlife. Recognizing the extensive ecological damage, the federal government listed melaleuca as a noxious weed in 1992.
Today, full eradication of melaleuca is no longer considered a viable goal. Conservation efforts, involving biocontrol agents, herbicides, and mechanical removal, now aim to suppress seed production, reduce existing stands, and protect restored wetland areas across South Florida.
