General Information

PHC Nursery/Media Mix is a highly effective, dry, spore inoculant for establishing vesicular-arbuscular mycorrhizal (VAM) fungi symbiosis on roots of many horticultural plants, including trees and shrubs, flowers, grasses, and herbs. VAM plants have better survival and growth, absorb more phosphorus and other mineral elements, and have improved abilities to efficiently absorb more water from soil than plants without VAM. This product also contains several strains of nitrogen fixing and phosphorus solubilizing bacteria. All these beneficial biological microorganisms are blended with organic soil amendments, in a granular form.

PHC Nursery Media Mix:

- Improves absorption of water and minerals from the soil

- Helps plants mitigate adverse environmental stressors such as drought, salinity, and extremes of soil pH


Soil pH: The fungi in this product were chosen based on their ability to survive and colonize roots of numerous plant species within a pH range of 3.0 to 8.0.

Fungicides: As a general rule, nonsystemic fungicides applied to aboveground plant parts, at label rates and using recommended procedures, have little effect on VAM development. When using systemic fungicides, apply PHC Nursery/Media Mix 2 weeks before or after fungicide application, and at minimal concentrations recommended by manufacturers. Avoid soil-drench fungicides.

Other Pesticides: Nematicides and insecticides applied to actively growing plants do not normally affect VAM. Herbicides that kill host plants will also kill VAM fungi. Herbicides recommended for “over-the-top” application to the host plant that do not affect the plant will not affect its VAM. Insecticides and herbicides applied at label rates.

Limitations, Restrictions, and Exceptions


Apply 1/2 pound per 100 square feet or 2 pounds per 100 linear feet and till into the top 2 inches of the soil just prior to seeding. At this rate, the product applies a minimum of 200 VAM spores per sq ft, based on standard beds of 4 feet width.


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