Black Substance On House Siding

Watch as lou manfredini ace s home expert shows you an easy and affordable way.

Black substance on house siding.

Whether it s mold or mildew your siding is no place to have things growing. But testing is probably not justified. Although it s most often found on the east coast it can grow anywhere and especially thrives in areas that have cool damp springs or rainy fall weather conditions. Use these simple landscaping tips to prevent this from happening.

In nature the artillery fungus shoots its spores towards sunlight. Are those spots alive. They are the reproductive structures produced by artillery fungus sphaerobolus stellatus one of several fungi common on wood mulches used around plantings in home and commercial landscapes. A microscopy lab examination of a sample from this surface would be needed to know for sure.

The black stains on the vinyl siding shown at left may be a fungus or a black agae. Shotgun fungus can shoot black spots on your house here s how to avoid the mess. In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding. The black tar like spots that are all over your vinyl siding are more than likely a fungus called sphaerobolus stellatus better known as artillery or shotgun fungus.

By the growth pattern we think this is almost certainly a dark colored algae.