Black Substance On House Siding

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.

Black substance on house siding. And of course the black spots show up better on white surfaces so they are noticed more easily. If you re seeing dark specks on your siding the culprit could be hiding in your mulch. A microscopy lab examination of a sample from this surface would be needed to know for sure. The dark spots are indeed spores but they do not come from your oak trees.

In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding. Watch as lou manfredini ace s home expert shows you an easy and affordable way. 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. But testing is probably not justified.

Use these simple landscaping tips to prevent this from happening. Are those spots alive. 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.

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