If the spores are fresh sometimes soap and water with a scrub brush will remove a bit of the fungus.
Arterial fungus on siding.
These sticky black dots cling to vinyl siding like glue.
In home gardens it often takes up residence in wood mulch.
Artillery fungus is a common fungus in north america.
The common fungus can be found in bark mulch and manure and has the ability to propel spores several feet giving the spots a splattered appearance.
The worst thing about this fungus is that it shoots spores up to 20 feet which often land on siding cars and anything else that surrounds the mulch.
As you have discovered the spore mass is difficult to remove without damaging the surface.
We have not found a good efficient way to get them off without leaving a stain or damaging the siding especially on old dry siding.
There is no fungicide registered as an artillery fungus treatment.
Its primary job is to decay dead wood.
Artillery fungus or sphaerobolus looks like mud or dirt spots and while the spores aren t harmful they can stain your home deck or car if not cleaned thoroughly.
There is no recommended artillery fungus treatment.
The artillery fungus or shotgun fungus is a wood decay fungus that likes to live on moist landscape mulch.
The fungi eject the sticky spore mass which can be blown by the wind as high as the second story of a house.
When it is time for it to reproduce the fungus lives up to its name and shoots tiny spores in all directions.
The spore masses of the artillery fungus stick like super glue.