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Rocks instead of mulch around Arborvitaes

13 years ago

I have 17 Emerald Green Arborvitaes I just planted 2 weeks ago as a screen near my fence line and I've been told the mulch should be placed over the soil to retain the moisture for my trees. Problem is I have 2 boxers who ignore the trees but love to eat the mulch. I'm wondering if it would be safe to use small rocks instead of the mulch to cover the soil. The rocks range in size from 2-5 inch in diameter. Also if the rocks wouldn't be appropriate any suggestions on what other materials to use would be greatly appreciated since I am a newbie to this gardening world. Thanks again.

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