This is a 3″ decorative cobble rock. It needs to be placed at 4”-5″ depth MINIMUM. For best results install a heavy weed fabric prior to rock installation to reduce weed growth.
Note: We recommend that you come to our yard and look at product in person before ordering. None of the products are “washed” but they are screened to size and they could be dusty or contain some fines. Also this is natural rock and colors can fluctuate slightly.