Quickly and quietly, non-native invasive plants are making deep inroads across America, depriving entire ecosystems of the living things and natural resources they depend on to survive. This program illustrates the alarming environmental and commercial impact of non-native invasive plants; explains why they were planted and how they got out of control; introduces federal, state, and local organizations dedicated to stopping them; and describes mechanical, biological, and chemical methods of fighting them. The program also catalogues numerous pest plants currently wreaking havoc, including kudzu, purple loosestrife, garlic mustard, giant salvinia, yellow star thistle, and water hyacinth. (61 minutes)