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10 remarkably useful plants you can find in the wild

By: Laura Moss on July 6, 2011, 9:30 a.m.
walnut tree

Photo: Great Valley Center/Flickr

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Walnut trees

Several species of walnut tree are found in America, but they do much more than just provide a healthy snack. These deciduous trees can reach heights of 100 feet and have compound leaves and nuts that grow in singles or pairs. Walnut leaves can be brewed to make a tea that treats constipation and diarrhea, and the bark can be chewed to ease toothaches; however, pregnant women shouldn’t ingest decoctions made from walnut trees.