Learn how to remove and prevent them.
Black spot spors on siding.
Black spots on siding.
And of course the black spots show up better on white surfaces so they are noticed more easily.
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.
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.
These spots are often caused by spiders especially true when you re near water.
Bet your boat will have spots too if you have one.
We will call these spores although they are technically spore masses or gleba.
We have not found an efficient way to get them off without leaving a stain on the 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.
It may look unsightly but it s not harmful.
The spores are usually shot only a short distance but the wind can carry them for longer distances.
If you re seeing dark specks on your siding the culprit could be hiding in your mulch.
Thankfully i only have one area that has plants next to it so the bleach solution wouldn t hurt them but not sure about my deck stains.
Artillery fungus is a wood dwelling fungus commonly found in mulch.
The siding has been on the houses for 12 years and now everyone is talking about the black spots so it s really a town issue lol but one we need to figure out.
In nature the artillery fungus shoots its spores towards sunlight.
Black spots on your house siding can be hideous these spots are known as artillery fungus.
Use these simple landscaping tips to prevent this from happening.
In the absence of direct sunlight it shoots the spores at highly reflective surfaces such as white house siding.
And of course the black spots show up better on white surfaces so they are noticed more easily.
