This will buy you a year before the fungus reaches to the top of the new mulch.
Black spots on siding from mulch.
They are raised hard bumps.
Add a fresh layer of mulch.
Use big pieces of pine bark or other bark mulch which are a less hospitable place for the fungus.
Replace wood mulch with landscape fabric and small stones.
It s sometimes referred to as shotgun fungus due to the shotgun like pattern of black specks all.
What are these black spots on your house siding.
Others have said it s a fungus from mulch.
Davis of penn state.
Some tell us it s from spiders.
You have to scrape them off and they leave behind a stain that is almost impossible to remove.
The artillery fungus is a white rotting wood decay fungus that likes to live on moist landscape mulch.
Artillery fungus is a wood dwelling fungus commonly found in 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.
The tiny dots are caused by what s called artillery fungus that grows in certain types of mulch.