Black Spots With Holes On Siding

You have the infamous artillery fungus.

Black spots with holes on siding.

It s on the porch my windows but it is worse on the siding. We have these small black spots that look like specks of tar all over our white vinyl siding of our house. Seeing black tar spots on the sides of your house or vehicles. It goes all the way up to my second story windows and is even under my soffit and on my gutters.

Also known as artillery or cannonball fungus sphaerobolus it uses internal water pressure to forcefully fire its spores similar to seeds up to 20 feet away the fungus sets its sights on bright areas so that means it will aim for any pale surface that reflects light such as the siding on your house. Are those spots alive. It s hard to see shotgun fungus itself because it s only 2 millimeters wide. 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 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.

The spots are about the size of the head of a pin and appear to be black or dark brown in color. Small black spots on siding. That s the sound of your siding being destroyed. We have thousands of tiny black spots pin head size all over the siding of our house.

However you don t have to passively accept whatever damage these invaders wreak on your home. And of course the black spots show up better on white surfaces so they are noticed more easily. If you notice lots of tiny black or dark brown spots developing on your siding above a landscaped area of your yard as seen below it is most likely artillery otherwise known as shotgun fungus. Masonite siding damage occurs when water penetrates through seams joints and holes with improper caulk.

In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding. I am getting small dark spots on windows and the white siding of my house. In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding. Will they hurt my house like eat holes in my siding.

By sandy feather penn state extension. Others have said it s a fungus from mulch. Artillery fungus is a wood dwelling fungus commonly found in mulch. And of course the black spots show up better on white surfaces so they are noticed more easily.

I have tried to remove these spots with mineral spirits without. If you can see black marks or streaks anywhere on your masonite siding it is a sure sign.