In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding.
Black dots all over siding.
And of course the black spots show up better on white surfaces so they are noticed more easily.
These spots are often caused by spiders especially true when you re near water.
Small black spots on 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.
Davis of penn state.
We have these small black spots that look like specks of tar all over our white vinyl siding of our house.
The fruiting body of this fungus orients itself toward bright surfaces such as light colored houses or parked automobiles.
Thousands of them about the size of a ballpoint pen tip.
The artillery fungus is a white rotting wood decay fungus that likes to live on moist landscape mulch.
Use these simple landscaping tips to prevent this from happening.
The artillery fungus shoots its black sticky spore mass which can be windblown as high as the second story of a house.
Black spots on siding.
The tiny dots are caused by what s called artillery fungus that grows in certain types of mulch.
Are those spots alive.
It s on the porch my windows but it is worse on the siding.
It goes all the way up to my second story windows and is even under my soffit and on my gutters.
I have black spots all over my vinyl siding.
What are these black spots on your house siding.
They may be a problem.
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.
They are almost like tar.
You have the infamous artillery fungus.
Bet your boat will have spots too if you have one.
They are even as high up as my gutters up to 15 ft.
It seems they are only where my mulch beds are.
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.