Charcoal increases the soil’s ability to hold onto plant nutrients and beneficial soil microbes by slowing or reducing the leaching of nutrients by rain or watering. The low density of charcoal lightens heavy soils, which allows better root growth, increasing drainage and allowing air into the soil.

How much charcoal do you put in soil?

And typically speaking, we recommend that five percent of the charcoal to be mixed with the top 20 centimeters of soil. For example, if the soil density is 1.4 tons per cubic meter and according to that, probably you should calculate it according to the surface area.

Can I put charcoal in my plants?

Adding a layer of activated charcoal to the bottom of your plant pot, underneath the soil, can help your plant’s health in a number, according to Apartment Therapy. The substance rids the soil of impurities (which is why it’s sometimes a great health and beauty ingredient), repels insects, and prevents mold and odors.