Why Are There Small Black Dots On Your Siding?

Artillery fungus spores on siding.

The small black fungus spores on your siding are most likely from artillery fungus. Artillery fungus is a type of fungus that grows in wood chip mulch and decaying wood. It is most common in areas with wet weather. The fungus produces black, spore-filled spheres that can be shot out of the mulch on to…

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