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It's later now then when you

It's later now then when you wrote (it's Aug 8); sorry for the delay in responding. The thought then and now is try it. The Pacific Northwest is a huge area and your exact location is not known, but if you typically have a long summer, you might just get a few more spuds—even small ones. The only thing that you should do is change the soil. This is a form of crop rotation, when growing in containers. Use a similar mix to what brought you success. Good luck!