I noticed some random black spots last year on the siding on my north facing siding. I thought it was just random dirt and left it alone.
This year, tho, the number of spots has increased.. i took a closer look and it doesn't look like dirt. it doesn't come off with just a brush and water. Closest thing i could find online is that it's something called artillery fungus.
Has anyone had this around here? i have no idea where this could be coming from - it's managed to make it's way half way up the 2nd floor (about 20 feet above grade). the suggestion is that this comes from decaying plant matter, but there is no decaying plant matter in my backyard...