10/05/2026
Mushrooms came up after the rain and you're wondering what's wrong with the grass.
Usually nothing. They're feeding on something dead underneath your lawn, normally old wood: a stump that was ground down but never dug out, roots left after a tree came down, or timber buried when the house was built. Wood like that takes years to break down, which is why they come back to the same patch every wet spell.
Most of them will disappear on their own once things dry out. The one worth a closer look is a ring or an arc of mushrooms with grass that's thinning, browning or dying around it. That can be a fairy ring, and it's worth having someone look before you treat it.
On fungicide: for a normal scatter after rain it usually isn't needed, because spraying doesn't touch the old wood underneath that's feeding them. It does have a place with fairy ring, and it's part of our annual turf management program.
One more thing. If you've got children or a dog that might eat them, pick them up and throw them away. If you think one has been eaten, call Poison Control or your vet right away.
https://carolinaturfandmosquito.com/mushrooms-in-lawn-charlotte/
Most lawn mushrooms feed on buried wood rather than the grass. Why they return to the same spot each year, and the fairy ring type worth treating.