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Aquarium Escapee: Hydrilla Chokes Florida Waters
31 Oct
Summary
- Hydrilla, introduced in the 1950s, now infests over 70% of Florida's watersheds.
- The invasive plant spreads rapidly via fragments, tubers, and fast growth.
- Managing hydrilla costs Florida millions annually, impacting waterways and natives.
An aquatic plant, hydrilla, introduced to Florida in the 1950s for home aquariums, has become a pervasive management challenge. By the 1990s, it had established populations in over 70% of Florida's watersheds. This rapid spread is attributed to its aggressive growth rate, reproducing via stem fragments, underground tubers, and turions.
The invasive plant can grow up to 4 inches per day and thrives in low-light conditions. Once hydrilla reaches the water's surface, it forms dense mats that block sunlight essential for native aquatic vegetation. This dense growth impedes boating, swimming, and fishing, and can affect water flow and irrigation.
Florida employs a multifaceted approach to manage hydrilla, including physical removal, herbicides, and biological controls like grass carp. Despite annual expenditures in the millions, the plant's resistance to certain herbicides and its reproductive capabilities present ongoing difficulties. Preventing further spread remains crucial, with authorities advising boaters to clean equipment and discouraging the release of aquarium plants into natural waterways.
