Black Sooty Mold

Black Sooty Mold is a sooty, gray-black and velvety, often crust-like coating may develop on the leaves, needles, fruits and branches of certain plants. The coating is actually the growth of one of several species of black-colored fungi or molds. Sooty molds often grow on sidewalks or fences under infested trees and are considered to be a cosmetic or aesthetic problem. Source: Wikipedia.com