According to a recent survey, more than 200 acres of the lower third of the Connecticut River is overgrown with hydrilla, an invasive aquatic plant that, according to the Connecticut Agricultural Experiment Station, is among the most difficult to control.
The hydrilla in the Connecticut River is a new genotype not found in Asia, Europe or in other invasive growths in North and South America. The hydrilla is a hardier variety, and the best solutions for mitigation are unclear.