Yea only if reusing the soil, and then there is more to it than that so I suggest move on with the soil, no need to save. If you are using soil from outside, bake it at least at 400 degrees to kill anything that may be living in the soil you don't want. I always go organic Ina bag from Home Depot or whatever... You know what your getting, just don't get the slow release feed stuff. No good fort our thang