onions i’ll use quick. about 1/3 of the potatoes will be stored with my dahlia tublers as seed potatoes. been pulling handfulls for meals the past few months. the rest will be eaten at thanksgiving. the carrots and parsnips i’m trying out hay in cardboard boxes this year.
the past two i did milk crates lined with a trash bag, then layered play sand over the carrots. so there was enough separation between each carrot to prevent rot from spreading. it works really well but it’s a pain to move those crates around.
i’ve got a heater in my garage keeping it about 45*f all winter, but a cool corner in a basement would work as well. depends on your region too. some folks are lucky enough to just leave the root vegies in the ground over winter.