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Gardening: Christopher Columbus exchanged plant materials around the world

Rodd Moesel explains how Christopher Columbus and his explorers swapped American plant materials with European plant materials, a practice many gardeners still embrace today.
By Rodd Moesel, For The Oklahoman Published: October 8, 2012

Happy Columbus Day! As we celebrate Christopher Columbus and the discovery of America, we have entered the heart of the fall gardening season.

This continent has...
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