Brown Spots On House Siding

We have a problem with our siding on front and back of our 2 story home.

Brown spots on house siding.

The photo at above left shows green algae on vinyl siding. The dark spots are indeed spores but they do not come from your oak trees. Click to enlarge any image small gray or darker round spots on siding that are about 1 16 in individual diameter particularly if the spots are slightly raised may be artillery fungus a mold spore. Artillery fungus is a wood dwelling fungus commonly found in mulch.

What it looks like. Artillery fungus is difficult to get rid of because of its sticky properties. Algae may also look black or brown as may some molds. These crickets are light brown tan and dark brown with a humped back.

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. Where you ll find them. We have thousands of tiny black spots pin head size all over the siding of our house. It is occuring on first floor only same area in front as in back.

I e not entire house. Some tell us it s from spiders. 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. This may be where it s stemming from in your yard as you mention that the fungus seems to be limited to growing on the siding closest to your mulch beds.

Others have said it s a fungus from mulch. They have very long antennae and their bodies grow between 1 2 to 1 1 2 inches long. This fungus can grow on multiple surfaces including wood siding fences decks and cars. Artillery fungus stops making spores when the temperature is over 78 f so you will get a break in the summer.