05-23-2013, 07:13 AM
It is hard to tell where the soil came from, it would depend on the integrity of the company you were dealing with.
If you have concerns, you can have your soil tested.
http://www.ctahr.hawaii.edu/uhmg/EastHI/soil-test.asp
If you have concerns, you can have your soil tested.
http://www.ctahr.hawaii.edu/uhmg/EastHI/soil-test.asp