Brown Spots On House Siding

Many bites occur because the spider is hiding in folded towels.

Brown spots on house siding.

Others have said it s a fungus from 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 brown recluse likes to hang out in undisturbed corners of homes in sheds and in basements or cellars. Where you ll find them.

What it looks like. I e not entire house. We have thousands of tiny black spots pin head size all over the siding of our house. Some tell us it s from spiders.

It is occuring on first floor only same area in front as in back. The photo at above left shows green algae on vinyl siding. 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. Artillery fungus is difficult to get rid of because of its sticky properties.

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. They have very long antennae and their bodies grow between 1 2 to 1 1 2 inches long. This mostly happens during cool rainy spring and fall seasons especially in shady areas so you re most likely to find it on the darker north side of your house. 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.

We have a problem with our siding on front and back of our 2 story home. Algae may also look black or brown as may some molds. Artillery fungus stops making spores when the temperature is over 78 f so you will get a break in the summer. Artillery fungus is a wood dwelling fungus commonly found in mulch.