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Seashells safe to use in rock garden?

Posted by libbypittsburgh 5/6 Pittsburgh (My Page) on
Fri, Feb 17, 06 at 8:16

Hi,
I have a small area, about 4 feet by 4 feet. I'd like to put a couple of small ornamental grasses there and to cover the soil with seashells, such as big clam shells and other smaller shells.

Do you think the seashells will cause any problems in the soil, such as leaching out too much salt. Should I put wood mulch down, then cover with shells?

Thanks, Libby


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RE: Seashells safe to use in rock garden?

Seashells won't leach salt (sodium chloride) once they've been washed, but seashells are made from calcium carbonate, which is the same as limestone. Many rock plants won't mind this, some will love it, but some will hate it.


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