As a botanist and extension agent, I think quite a bit about how plants grow. Understanding the method to their madness helps to explain and diagnose the various concerns of citizens that come our way ...

Aridity thresholds for measured (a) aboveground biomass (n = 1353) and (d) root-shoot ratio (n = 3093). Solid red lines represent the linear fits on both sides of each threshold. The red numbers and ...