Molybdenum (Mo) is one of the many nutrients that support proper growth of marijuana plants. The main role played by this mineral is to help in the process of metabolizing nitrogen. When there is a lack of Mo in cannabis, the plants cannot fix nitrogen from the air. AS a result, this causes a reduction in growth and an overall decline in the vigor of your weed plants. It is therefore important to know some of the warning signs of a molybdenum deficient marijuana plant so as to fix the problem ...