How the Growing Degree Days (GDD) help investors understand plant growth, yield potential and climate suitability. Calculating and exploring global GDD accumulations gives us a window into crop suitability, yield potential, and how the current crop year is likely to be shaping up. As such they are an essential part of any toolkit for thesis building, underwriting and monitoring. Plants think in terms of energy, they see in terms of light availability, and to understand each o