Mycorrhizal fungi are living microorganisms with a finite amount of energy reserves to survive long storage periods without a host plant to germinate and establish a connection. Even in the best conditions, the viability of products containing mycorrhizae propagules rapidly starts to decline. Products containing propagules are typically as much as 50% dead within 2 months from the date of manufacture. Rarely does it reach the customer with more than 25-50% viability.
We took this issue into account when creating Trifecta Myco Supreme, which is the reason our product only contains viable spores vs. propagules. This enables us to guarantee the product has long-term maximum effectiveness and will be 100% viable up until 2 full years after the manufacturing date, as long as it is stored properly in the recommended conditions.