Black Substance On House Siding

In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding.

Black substance on house siding. Watch as lou manfredini ace s home expert shows you an easy and affordable way. And of course the black spots show up better on white surfaces so they are noticed more easily. The dark spots are indeed spores but they do not come from your oak trees. 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.

In nature the artillery fungus shoots its spores towards sunlight. Use these simple landscaping tips to prevent this from happening. Are those spots alive. Whether it s mold or mildew your siding is no place to have things growing.

The black stains on the vinyl siding shown at left may be a fungus or a black agae. By the growth pattern we think this is almost certainly a dark colored algae. But testing is probably not justified. Shotgun fungus can shoot black spots on your house here s how to avoid the mess.

If you re seeing dark specks on your siding the culprit could be hiding in your mulch.