decomposed granite - Knowledgebase Question

Reno, NV (Zone 5B)
Question by ashleywinnie
May 10, 2005
what are the guidelines for installing DG or decomposed granite...liners, how many inches to do, danger to plants, run-off??


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Answer from NGA
May 10, 2005

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It is no longer recommended to use liners as they impede the flow of water/drainage and/or hamper roots. The amount to apply depends on the size of the granite: the bigger the pieces the less is applied generally as it becomes difficult to walk on. Keep any mulch material (which is what DG is) away from the stems and trunks of plants by several inches, so it isn't scraping against plant tissue, otherwise it causes no problems. If you have significant sloping and water flow where run-off is an issue, you may want to consult a landscape architect.

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