Does toxic black mold occur around homes?

While some species of mold produce pigments that resemble black, no mold is truly "black" in color. Toxic, allergenic molds do not thrive outdoors so they seldom occur around the exterior of homes. Even so-called toxic-black-mold, Stachybotrys chartarum only rarely occurs in structures that do not experience constant dampness for an extended period, or have water damaged materials that remain soaked for days.