 and could help provide the nation with renewable energy. As large parts of the Sunshine State's once-famous citrus industry have all but dried up over the past two decades because of fatal diseases such as greening and citrus canker, some farmers are turning to the palm gamia tree. The climate-resilient tree has the potential to produce plant-based proteins and a sustainable biofuel. The trees grow well in drought or rain, and they don't need fertilizer or pesticides.