Knowledgebase
Ticket # 0183625 - Concerns over mushroom growing in my yard #913846
Asked August 13, 2025, 9:50 AM EDT
Grafton County New Hampshire
Expert Response
Hi William,
Thanks for sending in that great photo of the mushroom in your yard. My best guess is that this is a black staining polypore (Meripilus sumstinei). Keep in mind that without observing it in person, I cannot be 100% certain. Here is a resource on the black staining polypore. Keep in mind it's from Missouri but the information is still good-
https://mdc.mo.gov/discover-nature/field-guide/black-staining-polypore
Generally, mushrooms are harmless to handle, even the most toxic ones we have in the region can be touched without ill effect. Feel free to remove this mushroom if you like and compost it or toss it into the woods.