Q.diatomaceous earth used in swimming pools
D.E. has been backwashed from a swimming pool filter to an area of the yard where I want to plant Nellie Stephen Hollies. Will the pool D.E. harm the hollies? They are established plants that I want to transplant from another location in the yard.
Downtoearthdigs
Answered on April 25, 2019
Unless it has additives, it will be safe to plant. My concern will be the chlorine from the water. This will, usually, gas off fairly quickly, but any solids will dissolve into the soil. You may want to get a soil test kit to make sure that the area is safe for the plants before you set them.
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