mold spores on vinyl siding - Ask Extension
We have hundreds of black dots on white vinyl siding by our landscaping. How do we remove them. Thank you.
Knowledgebase
mold spores on vinyl siding #277972
Asked September 14, 2015, 9:19 AM EDT
We have hundreds of black dots on white vinyl siding by our landscaping. How do we remove them. Thank you.
Boone County Iowa
Expert Response
Sounds like artillery fungal spores. Cornell University has a fact sheet on this fungus:http://plantclinic.cornell.edu/factsheets/artilleryfungus.pdf
If it is artillery fungus, you will find the fungus growing on wood mulch. The spores have a sticky resin that is very difficult to remove. Ideally, it is best to eliminate the source by switching to an alternative non-wood mulch, such as rock.
