Soil composition for my raised bed garden

Asked April 2, 2015, 1:10 PM EDT

Hello - in an answer to a previous question on what to use for soil in my raised bed garden, I was advised to "Mix 1 part organic matter (peat moss, compost, etc.) to 1 part sand or perlite to 2 parts soil."

My next question: I recently found a large bin of old soil leftover from flower window boxes that I'd emptied after the growing season (so this is presumably mainly potting soil). Can I use this as the soil in my raised bed garden and then amend it with perlite and compost?

Hennepin County Minnesota potting soil lrk horticulture

1 Response

Yes, and you probably only need the compost. The only thing is it is not sterile but there is no guarantee that purchased soil is either. Soil never wears out and can be rebuilt by adding compost forever.