How to clean flagstone walkway?

gaviota_gal(z10/So.CA)July 16, 2011

My daughter moved into her first house and the large flagstones (Arizona flag, beige and reddish colors) make a nice, non-mortared entrance walk but they are quite dirty, sort of blackened. The same thing has happened to my flagstone patio. I tried washing with a power sprayer with no success. Is there a chemical I can use which will not destroy surrounding plants? The runoff of liquid can not be kept off of the plants.

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Tiffany, purpleinopp GardenWeb, Z8b Opp, AL

I would use a mop and apply diluted bleach. You might find some answers on the porch and deck forum.

    Bookmark   August 18, 2011 at 11:14AM
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