What do roots tell us about how to take care of plants? That's the topic of this week's Root Simple Podcast with our guest Robert Kourik. Kourik is the author of many books including Designing and Maintaining Your Edible Landscape Naturally and Drip Irrigation. The discussion begins with the remarkable tree root diagrams pioneered by Dr. John Weaver in the 1920s and 30s and featured in Kourik's new book Understanding Roots. From there we touch on how to plant fruit trees and the intricacies of how to water trees, vegetables and native plants. Then we delve deep into drip irrigation, dynamic accumulators and phytoremediation.