How do I clean concrete curbing around flower beds?

peabody1January 25, 2013

I have concrete curbing all around the house which creates flower beds. It has something black on it in places and I would like to clean it. I have contacted a couple of power washing company, but they will not power wash it. Does anyone know how I can clean this and not kill my grass or bushes?

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graywings123

It would be fairly simple to clean the concrete with a scrub brush and some all-purpose cleaner, and then hose it off. Have you tried just spraying it with the garden hose on as high pressure as you can make the hose nozzle?

It is equally important to figure out why it is there. Is the black stuff appearing in shady areas? If it is mold, which it probably is, it's going to grow back over time.

    Bookmark   January 26, 2013 at 9:21AM
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peabody1

Yes, it is in shady spots and we do think it is mold. Tried just hosing it and it didn't work.

    Bookmark   January 26, 2013 at 5:33PM
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tinan

Use a mixture of borax and laundry detergent, scrub on with a stiff brush on a handle. Let sit 15 minutes or so, scrub again and rinse!

    Bookmark   January 27, 2013 at 7:03PM
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