Metrowest Daily News 9/18/18: Tape grass threatens Dudley Pond. Work will begin at Dudley Pond this week to remove invasive tape grass, which threatens the popular recreation spot. “It’s impossible to swim there and boat there,” said Mike Lowery, who has lived near the pond for 25 years. Approximately nine of the pond’s 84 acres – or 10.7 percent – is covered with the ribbon-like freshwater plant, an invasive species.