I planted my rhizomes (1 each of Cascade, Magnum, and Nugget) April 4th and I still haven't seen any sprouts. I was under the impression that I could see sprouts as early as 1 week. What may have happened is that I buried them them too deep. I read that they should be 3-5 inches under the soil, but I have recently read other things that say as shallow as 1 inch. They were probably 3 inches below the soil line and then I mounded up some dirt to try and improve drainage another 2 inches. Are they way too deep? Is that going to hurt them in any way, or will it just delay their first sprouts? I never thought I'd be so worried about growing what is effectively a weed.