moss removal - Knowledgebase Question

Allentown, PA (Zone 6B)
Question by clown99
April 14, 2005
How do I remove moss off of blacktop. I have it growing all over my sidewalk out back. I have scraped it off and it returns. Is there a product to remove it or a method or removal that works best? Please help!!!!!


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Answer from NGA
April 14, 2005

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Moss and algae usually grow where it is damp and shady. If you can open up the area to more sunlight and provide a quick way for water to runoff the walk so it dries off quickly, and also keep it swept clean, that should help prevent or slow the growth. Improved air circulation can also help. An annual or twice yearly power washing should also help dislodge the growth plus any spores along with any organic matter helping them thrive there. The products that you might use to clean it off of say a roof (such as bleach or zinc chloride) would be likely to run off the walk and damage surrounding desirable plants, so it is difficult to recommend one.

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