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How to Grow Mycorrhizal Fungi

By Elizabeth Knoll ; Updated September 21, 2017

Mycorrhizal fungi are a naturally occurring fungi in the soil that attach themselves to plant roots and help the plant make use of water and other nutrients in the soil. They are found on the roots of nearly 95 percent of all plant species. It is fairly easy to grow mycorrhizal fungi in your garden if the population is low, and the process requires minimal effort on your part.

DIg a hole large enough to accommodate the new plant. Remove the plant from its pot and gently remove excess soil to expose some roots. Hold the plant over the planting hole.

Apply 1 to 2 tbsp. of mycorrhizal fungi root builder to the roots of the plant. Allow the excess to drip into the planting hole.

Place the plant in the planting hole and backfill soil around the root system. Tamp the soil down gently with your garden shovel and water thoroughly.


Things You Will Need

  • Garden shovel
  • Mycorrhizal fungi root builder
  • Garden hose
  • Water source


  • For plants already in the ground, introduce mycorrhizal fungi into the soil by watering the Mycorrhizal fungi root builder into the soil. Follow the directions on the bottle.
  • Plants rich in mycorrhizal fungi are less susceptible to other fungal infections.


  • Avoid applying fungicides to plants if possible. Fungicides will kill the beneficial mycorrhizal fungi.