Do you know what this is?

Asked September 28, 2019, 5:22 PM EDT

We were cleaning out our very unfinished basement and came upon this growth in an area we have likely not accessed for years. The concrete is crumbling away and this has grown. It definitely has not always been present. We have not yet abated it and are curious what it may be and how cautious we should be when removing. Fungi of some sort?

Jefferson County Kentucky

1 Response

Yes it looks fungal, but photos do not always show the whole story. If this is fungi,
it has a food source (tree root,leaves etc.) and that could mean that there is a structural issue with your foundation. There is not a spray labeled to control wood fungi or mushrooms, in or out doors.

We recommend that you reach out to someone in the construction or basement sealing business to check the area this part of your home's foundation.
If you work around this fungi wear a mask and protective clothing to avoid inhaling any spores that you might be sensitive to.


Feel free to contact our office if you have other questions.

Let me know if I can help you further!


Carol Wilder
Horticulture Technician
Jefferson County Cooperative Extension Service
Email: carol.wilder@uky.edu

502-569-2344
4200 Gardiner View Avenue

Louisville KY 40213