Soil
Q.

Topsoil

Zone Toronto On. Canada | Anonymous added on February 24, 2018 | Answered

I have heard that the top soil I can buy in plastic bags will become sterile over time if it is kept in the bag unopened. Is this true? Thanks

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on March 3, 2018

No, to sterilize soil you need to raise the temperature to 180 degrees F.
Here is an article with more information.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/sterilizing-soil.htm

You can purchase sterile soil in bags. The label should clearly state if it is 'sterile'.

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