Lesson 7 : Macro Vs Micro Nutrients – Know The Difference! February 5, 2016 Growing Tips First Watch : Teachings Of The Garden Sage Lesson 7 What did we learn? There are two categories of nutrients. Macro and Micro. Macro are the nutrients required in large amounts: your NPK (Nitrogen, Phosphorus, Potassium), Calcium, Magnesium, and sometimes Sulphur. Your Micro nutrients include things like Copper, Zinc, Boron and Molybdenum required in small amounts. Often times a grower will think they have a micronutrient deficiency but most fertilizers are well rounded and packed to the brim these days and it’s often that the plant has a problem consuming these nutrients, its not that they’re not there. They can also be looked at as mobile and immobile nutrients. Macro, being mobile are able to be moved throughout the plant to where they are needed. Micro are immobile nutrients and cannot be moved around by the plant freely. If a plant has a Macro nutrient deficiency the lower leaves will often be the biggest tell, if a plant doesn’t have enough calcium the nitrogen cannot be taken up the stem to where it’s most needed. This is why a number of ‘Cal-Mag’ (calcium-magnesium) products exist on the market and are regularly supplemented into common feeding programs. We hope you learned something and stop in next week to see what The Garden Sage is up to! Leave a Reply Cancel ReplyYou must be logged in to post a comment.