Elaine, we have had no snow here, or at least no accumulation. This stuff doesn't look like any algae or moss I have ever seen, and I have lived in the deep south my entire 71 years. It is BLACK.
Since I have raked up pretty much all of mine I could find (three bags, perhaps 40 lbs per bag), the sizable patches are on my next-door neighbors yard. He has St. Augustine. I will experiment on his slime. LOL Don't tell him!
