Know some people that live downriver and live about exclusively on what they grow & catch. That means they eat beets, carotts, and lettuce in about everything along with moose and salmon. Maybe every other year their spuds make it. No complaining from them though. Summer snowfall common here and you plan for it. We always get 1000 lb potatoes, and use plastic for frost.
Cold summers are like Y2K fears.
I guess it's all relative. We lost almost all our apples last year and the year before because of late frosts, and my kids planted the vegetable garden several times. Maybe this year we'll do better. We have some really old apple trees. They're small and gnarly looking but much tastier than the new ones.
Yow! Those are big potatoes!