Magnesium Deficiency In Marijuana Plants

I love marijuana magnesium deficiency

A lack of magnesium (Mg) can occur in all planting mediums and hydroponic systems. It does not often happen to outdoor marijuana growers however. Symptoms will start in the lower leaves, as they begin to yellow and exhibit chlorosis. These leaves will start to curl inward and eventually die. Edges of the leaves feel dry and crunchy to the touch. The deficiency will work itself up toward the middle and upper section of the leaves. The growing shoots will eventually shift from a pale green to a white color. The stems and petioles will all start to turn purple. This ability to travel upward makes a magnesium deficiency very mobile.

Magnesium’s main goal is to promote healthy veins and spur on the production of leaves. It is also needed for the production of chlorophyll and the breaking down of enzymes. Make sure to dowload my free grow bible for more information about nutrients at this link


To fix a magnesium deficiency, there are a number of solutions, but the best one may be the use of a product called Marijuana Booster. It’s something that many growers use to improve the quality of their yields, but it will also ensure a healthy balance of nutrients.

Other fixes include:

  • Magnesium sulfate
  • Epsom salts
  • Dolomite lime
  • Garden lime
  • Worm castings

Magnesium sulfate and Epsom salts work the fastest because they are water soluble. Indeed, Epsom salts are the easiest fix for hydroponic systems. Use a teaspoon of Epsom salts per every gallon of water in the tank. Treat with a quarter of the original dosage for each subsequent treatment. You can also employ the use of Calcium-Magnesium.

Download my free grow guide and order some high quality seeds at this link here. We ship seeds to the US, CA and many other countries. If you have any growing related questions please visit my marijuana support page.

Robert Bergman

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4 thoughts on “Magnesium Deficiency In Marijuana Plants

  1. I’m a first-time grower and my plants have a calcium magnesium deficiency.. I started feeding the plants Cal mag a couple days ago my question is how long will it take for them to fully recover from this?? Will the damaged leaves repair themselves or should I just remove any unhealthy looking leaves?? Thanks

  2. We are a worm casting business and have been wanting to test a mixture of castings with magnesium sulphate or dolomite for distribution as an additive in the same mixture/bag. Any advice?

  3. You actually make it seem really easy along with your presentation however I
    find this matter to be actually one thing that I think I might never understand.
    It sort of feels too complex and very huge for me.
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