Botanical atlas

White Muscardine Fungus

Beauveria bassiana

Beauveria bassiana does not belong to the world of kitchen and medicine chest herbs, it belongs to the soil itself, where it has quietly parasitized insects for millions of years. Its place in human history was earned not at the hearth but in the silk houses of northern Italy, where in 1835 the physician and entomologist Agostino Bassi traced a devastating disease killing silkworms back to this very fungus. That discovery, showing for the first time that a microorganism could cause disease in an animal, is now remembered as one of the founding moments of germ theory, arriving decades before Louis Pasteur's own famous work. In the centuries since, farmers and gardeners have come to value Beauveria bassiana not as a remedy but as an ally, a living insecticide that seeks out beetles, aphids, whiteflies, and other pests without the residues left by synthetic chemicals.

Safety.

This is a biological pesticide, not an edible or medicinal herb, and should never be ingested. The spore powder can irritate eyes, skin, or lungs if inhaled, and it can also harm bees and other beneficial insects if sprayed on open blooms.