Nickel (Ni) Marijuana Horticulture by Jorge Cervantes Enzymes require nickel to break down and use the nitrogen from the urea. It is also essential to iron absorption. Seldom deficient and…

Silicon (Si) Marijuana Horticulture by Jorge Cervantes Silicon is readily available in most soils, water, and as far as I know, it does not cause cannabis any complications due to…

Molybdenum (Mb) Marijuana Horticulture by Jorge Cervantes Molybdenum is seldom deficient. It is part of two major enzyme systems that convert nitrate to ammonium. This essential element is used by…

Copper (Cu) Marijuana Horticulture by Jorge Cervantes Copper is concentrated in the roots. It is also used as a fungicide. Copper is a component of numerous enzymes and proteins necessary…

Cobalt (Co) Marijuana Horticulture by Jorge Cervantes This nutrient is seldom mentioned as necessary for plant growth, and most fertilizer labels do not include cobalt. Cobalt is virtually never deficient…

Chlorine / Chloride (Cl) Marijuana Horticulture by Jorge Cervantes Chloride is found in many municipal water systems. Cannabis tolerates low levels of chlorine. It is usually not a component of…

Boron (B) Marijuana Horticulture by Jorge Cervantes Usually causes no problems, but boron must be available during the entire life of a pant. Boron deficiencies seldom occurs indoors. Boron is…

Iron (Fe) Marijuana Horticulture by Jorge Cervantes Iron is available in a soluble chelated form that is immediately available for absorption by the roots. Deficiency indoors is common in alkaline…

Manganese (Mn) Marijuana Horticulture by Jorge Cervantes Manganese deficiency is relatively common indoors. Manganese is engaged in the oxidation-reduction process associated with the photosynthetic electron transport. This element activates many…

Zinc (Zn) Marijuana Horticulture by Jorge Cervantes Zinc is the most common micronutrient found deficient in arid climates and alkaline soils. Zinc works with manganese and magnesium to promote the…

Micronutrients Marijuana Horticulture by Jorge Cervantes Micronutrients, also called trace elements or trace nutrients, are essential to chlorophyll formation and must be present in minute amounts. They function mainly as…

Sulfur (S) Marijuana Horticulture by Jorge Cervantes Many fertilizers contain some form of sulfur, and for this reason, sulfur is seldom deficient. Growers avoid elemental (pure) sulfur in favor of…

Calcium (Ca) Marijuana Horticulture by Jorge Cervantes Cannabis requires nearly as much calcium as other macronutrients. Avert deficiencies in the soil and in most soilless mixes by adding fine dolomite…

Magnesium (Mg) Marijuana Horticulture by Jorge Cervantes Marijuana uses a lot of magnesium, and deficiencies are common, especially in acidic (pH below 7) soils. Adding dolomite lime to acidic potting…

Secondary Nutrients Marijuana Horticulture by Jorge Cervantes The secondary nutrients – magnesium, calcium, and sulfur – are also used by the plants in large amounts. Rapid-growing indoor marijuana crops are…