The black stains on the vinyl siding shown at left may be a fungus or a black agae.
Black spot spors on siding.
Those annoying black spots that creep up your siding or splash along the side of your car may not be mud spatters but artillery fungus.
A microscopy lab examination of a sample from this surface would be needed to know for sure.
We have these small black spots that look like specks of tar all over our white vinyl siding of our house.
It s on the porch my windows but it is worse on the siding.
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.
All of these fungi are involved in the natural decomposition of wood based mulches.
These spots are often caused by spiders especially true when you re near water.
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.
What is artillery fungus.
The lady called us out in a job today to have us take big poop off her siding.
And of course the black spots show up better on white surfaces so they are noticed more easily.
Are those spots alive.
Use these simple landscaping tips to prevent this from happening.
Bet your boat will have spots too if you have one.
By the growth pattern we think this is almost certainly a dark colored algae.
How to clean fly poop or possible artillery fungus stains.
Black spots on siding.
It is sphaerobolus a common fungus that sticks firmly to light or white colored surfaces and resembles spots of tar.
Small black spots on siding.
They are the reproductive structures produced by artillery fungus sphaerobolus stellatus one of several fungi common on wood mulches used around plantings in home and commercial landscapes.
It goes all the way up to my second story windows and is even under my soffit and on my gutters.
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.
In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding.
In nature the artillery fungus shoots its spores towards sunlight.
