Whether you’re addressing deficiencies or toxicities, or determining delivery frequencies or water quality, this advice can help you develop a successful cannabis nutrient management protocol. Much of the indoor production of Cannabis sativa relies upon a hydroponic (non-soil) growing system. This means that a full complement of nutrients in a balanced formulation must be provided to the plants. Other factors, such as pH and electrical conductivity (EC), should also be tracked to ensure the plants have adequate nutrient availability. While managing all these factors may seem daunting, commercial floriculture production has been executing this level of management successfully for the past 40 years. The challenge for cannabis growers is the lack of scientific research to back up production recommendations. With cannabis production legalized in many states and in Canada, research into sound nutrient practices is now possible. These 10 tips for plant nutrition are built on the pillars of the ongoing research studies we are conducting at North Carolina State University (NCSU), observations made while working with cannabis and floriculture growers, and years of greenhouse production ...