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.