February 10, 2009 in Idaho
Kathy Plonka photo

This 55-acre grove of hybrid poplar trees is grown by the Hayden Area Regional Sewer Board. The poplars are cultivated for their sponge-like roots. During the summer, the poplars and adjacent alfalfa fields soak up 1.2 million gallons of treated wastewater.

 
 
 
 

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