Black Spots On Siding From Mulch

These are microscopic flowers that shoot tar like substance up the 20 feet.

Black spots on siding from mulch.

Others have said it s a fungus from mulch. I am getting small dark spots on windows and the white siding of my house. We have thousands of tiny black spots pin head size all over the siding of our house. In nature the artillery fungus shoots its spores towards sunlight to aid in dispersal.

Replace wood mulch with landscape fabric and small stones. Artillery fungus black spots on siding and vehicles. Plant a low maintenance groundcover in the area instead of using mulch. We have these small black spots that look like specks of tar all over our white vinyl siding of our house.

Artillery fungus black spots on siding and vehicles. Black spots on car house could be from a mulch fungus you may have seen these little spots and there s a weird explanation for how they got there. 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 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. Artillery fungus black tar spots on houses artillery fungus seeing black tar spots on the sides of your house or vehicles.

Artillery fungus is a wood dwelling fungus commonly found in mulch. The spots are about the size of the head of a pin and appear to be black or dark brown in color. This is damaging your siding. This common fungus is often found in bark mulch especially hardwood mulch too.

Use big pieces of pine bark or other bark mulch which are a less hospitable place for the fungus. Artillery fungus produce black tar like spots on vehicles and siding. Save for later print. This will buy you a year before the fungus reaches to the top of the new mulch.

And of course the black spots show up better on white surfaces so they are noticed more easily. April 30 2019 at 11 07 am edt updated april. By sandy feather penn state extension. The mulch is being contaminated by artillery fungus also known as sphaeobolus stellatus.

Some tell us it s from spiders. Add a fresh layer of mulch. There is some suggestion that artillery fungus in mulch such as cedar and pine bark nuggets may occur less frequently than hardwood.