The present invention is based on a plurality of benefits from the extracts of mycelia of individual fungal species, and mixtures of species, to provide an armamentarium of defenses from multiple stressors in order to help bees survive a complex of symptoms collectively called colony collapse disorder (CCD). More particularly, the present invention utilizes specific concentrations of extracts from pure cultured mycelium from mushroom forming fungi to reduce harmful viruses in bees and to increase the longevity of bees.
