Some tell us it s from spiders.
Black spots on siding in clusters.
They wont come off with plain high pressure water or a brush its even hard to scrape them off with my fingernail.
The spots are about the size of the head of a pin and appear to be black or dark brown in color.
Others have said it s a fungus from mulch.
The artillery fungus is a white rotting wood decay fungus that likes to live on moist landscape mulch.
I am getting small dark spots on windows and the white siding of my house.
It goes all the way up to my second story windows and is even under my soffit and on my gutters.
Vinyl siding stain diagnosis.
Are there any chemicals recommended that wont ruin my vinyl shrubs or lawn.
Have to scrub hard to remove them.
I have hundreds of tiny black dots spread out all over my house.
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.
I have tried to remove these spots with mineral spirits without success.
It s hard to see shotgun fungus itself because it s only 2 millimeters wide.
I live in colorado on the prairie so no humidity no mold.
Dirt from rain splash up algae lichens mold moss or even smoke or chemical stains have different causes and different preventative measures.
We have these small black spots that look like specks of tar all over our white vinyl siding of our house.
The only way i have found to remove them thus far is by scraping the windows with a razor blade.
They get on the siding because mulch has come into contact with the siding.
They are all over the garage on the floors and surfaces in my kitchen.
Artillery fungus is a wood dwelling fungus commonly found in mulch.
It s on the porch my windows but it is worse on the siding.
There are these little clusters of about maybe 10 15 perfect black circles just a bit larger than the period at the end of this sentence.
This article discusses common causes of stains or discoloration found on vinyl building siding.
What are the black spots the spots are artillery fungus.
Distinguishing the type of stain found on siding is useful in deciding on the cause and thus the cure or prevention of staining.
They are a fungus that usually spends most of its time in gardens and on mulch.
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.
Some in my hard wood entry way too.
