MAMMOTH CAVE, Ky. (AP) -- Officials at Mammoth Cave National Park have scheduled several events in an effort to control invasive exotic plants at the park.
Park officials say the weeds are crowding out and killing native plants on which natural ecosystems depend.
Rick Olson, Mammoth Cave ecologist, said kudzu may be the best-known invasive plant. He said it grows "at a tremendous rate and is extremely difficult to control."
The first event to control exotic plants runs Sept. 8-14 and workers will removed weeds including tree of heaven, crown vetch, Johnson grass, and kudzu. Several others are scheduled throughout the month.
(Copyright 2009 by The Associated Press. All Rights Reserved.)
