Sulfur is considered as a secondary nutrient for marijuana plants, but it plays a wide variety of vital roles. It is a major component of plant proteins, encourages root growth and facilitates distribution of chlorophyll. Sulfur is also one of the important nutrients required for optimal plant growth, plant protection mechanisms and formation of root nodule legumes. Marijuana plants make use of sulfur mostly during the vegetative stage, although traces of this mineral are required during most ...