Philip S. Wenz

‘Super weeds’ rise in defiance of herbicide

Meet Palmer Pigweed. Palmer’s a hearty fellow.

He’s capable of growing 2 to 4 inches per day until he’s 8 feet tall. His weed stalk is as thick as a man’s wrist and tough enough to damage farm machinery.

Palmer’s friendly to humans. Native Americans grew him for food. But he’s highly...

Philip S. Wenz, who grew up in Durango and Boulder, now lives in Corvallis, Ore., where he teaches “Creating Your Ecological House” at the community college and writes on environmental issues. Reach him via e-mail through his Web site,

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