Hey all, just a question. I guerrilla grow in a low sandy soil (just like a beach sand, almost no organic matter) area near a stream. I amend the local soil with great soil from fox farms, in a 2 x 2 foot deep hole. The water table is just under this level. My question is at the end just a week or so before harvest, is it possable to flush the soil? My last harvest was very potent but a bit harsh. I also live in the north and first frost is end of september around the 22nd.