Designed an inexpensive, reusable, open source system for accurately measuring water consumption of trees. The amount of water used by a tree provides information on its health, soil, and potential for fruit yield. Sap flow measurement the most accurate method of actually determining how much water a tree consumes. However, some commercial systems can retail for up to $1000. For 20% of the cost, we were able to create an easy to assemble system with wireless communications, ability to integrate multiple nodes, and a completely user controlled data display system.