Nitrogen deficiency in cannabis plants is one of the most common problems a grower will come across. It will begin by displaying yellow leaves at the bottom of your plant. This yellowing will continue to make its way up the plant, and slow down growth. Nitrogen is a very important nutrient for plant growth. It is used at different levels throughout the life cycle of a cannabis plant. It is very soluble, and can easily be washed out of your medium. Because of these two factors, a nitrogen deficiency can arise quickly, and may go unnoticed for a while before
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