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Plants are great concentrators of certain contaminants. Some even neutralize toxins into less harmful substances, which can then be carted awayFERNS
Roots absorb mercury and arsenic from soil.POPLAR TREES
Store waterborne contaminants such as natrazine and nitrates in bark, leaves, or roots. Some toxins, including landfill lechates, are metabolized into kinder stuff.TOMATO PLANTS
Absorb zinc, copper, and lead.SUNFLOWERS
Thrive in radioactive waters near Chernobyl; the roots concentrate
Soak up and hasten degradation of oil and other hydrocarbons in soil.INDIAN MUSTARD PLANTS
Concentrate lead, selenium, and other toxins in their shoots.