A Mushroom Bigger than My Head

Our post-Ernesto rainstorms continued this week and brought up lots of strange mushrooms in the flower garden. The hardwood mulch seems to have had lots of mushroom spores just waiting for the rainy season. I don't know what kind of a mushroom this is, but it sure is big. My husband said, "You want a pizza with that mushroom?" I wish I could grow edible things this big.