Well I had planted my potatoes (yukon gold, some purple one, and some pink one...cant remember the names of the pink and purple varieties) maybe 10-12 inches deep this year (most had long sprouts on them from being in the basement since harvested last September)...then I hilled another 4 or 5 inches on top of that. All I'm seeing so far is that I have to reach a lot deeper to find potatoes, and that a lot fewer potatoes are forming (despite far more stems on this years' plants compared to last years'). But the jury will be out until I actually start pulling them out) here and there over the next few months. From what I can see now production is about 1/4 of what it was when plants were only 4-6 inches deep. Tops look great though...
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