Never heard of it so had to Google it.

"powerful blend of thirty species of beneficial soil organisms that colonize plant roots and expand into the surrounding soil to greatly increase the absorptive surface area of root systems."

It is not a fertilizer as it claims. It is just another brand of Mycorrhizal fungi which is normally mixed into the soil around the 4-6" zone where the roots will be before planting or dusted directly on the plant roots of transplants before planting them. If you have already planted about all you can do is carefully mix it into the soil around the plants.

http://downtoearthfertilizer.com/products/biological-products/granular-root-zone-2/

Dave