Using Epsom Salt to Fertilize Houseplants

How Much Epsom Salt for Houseplants?

Epsom salt is a natural source of magnesium and sulfur, so if your houseplants are lacking in these key minerals, they may benefit from epsom salt. How do you tell if your plants are deficient in magnesium or sulfur? Often yellowing leaves are a sign of a sulfur deficiency in plants.

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According to the Epsom Salt Council, magnesium increases chlorophyll production and improves phosphorus and nitrogen uptake. They also state that sulfur is a key element in plant growth, helping produce vitamins.


Woman watering herb plant in an apartment window


How to Apply Epsom Salt to Indoor Plants


There are several ways to apply epsom salt to your plants. One method is to dissolve 2 tablespoons of epsom salt in a gallon of warm water. Water your houseplants with this mixture once per month.


You can also place the epsom salt and water mixture into a spray bottle and spray it directly on the leaves of your plant. Some people swear that it makes the leaves on their plants turn greener.


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Many people wonder if epsom salt kills houseplants. While It is true that epsom salt is better for some plants than for others, it will not kill your indoor plants. Applying this natural fertilizer to your houseplants monthly will most definitely benefit your indoor plants.


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4 Comments on "Using Epsom Salt to Fertilize Houseplants"

  1. Do you have any suggestions for getting rid of Japanese Beatles? They have covered the green bean plants.

    Thank you,


  2. I have never thought about that! I will place the Epsom salt and water mixture into a spray bottle, as you recommend. We moved to a new house and my plants need more attention now. I want to make them greener and fresh, maybe it will help. Thank you so much!


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