Deon de Villiers

Calling on Mycology experts!

I have just come into a beautiful property with mature oaks and poplars. The location is a leafy suburb in Cape Town.
I am worried about the mature trees having accumulated heavy metals and/or other pollutants and the possibility of these unhealthy substances ending up in the mushrooms.
There is lots of shade on the property so if mushrooms work it could be a real boon!

Any advice would be greatly appreciated!