We too have been wanting to have a root cellar in the very least, but, our problem is with two issues. first one is, we are renters (in the countryside), and the second is the property is flat and nowhere to dig into except down (and where our septic is actually, I am unsure). I have to think for the last reason alone we would not be able to, let alone digging something hugely deep on the property which is not ours. So we plan to grow some things which should be kept in a root cellar, but unable to, and wonder what our other options could be? Should we find an obscure hillside in the adjacent river gorge (public, open areas)? This seems to me, could be risky, to have someone come along and find our makeshift root cellar.... The property we are on, we rent the front two acres (house and yard included in that amount), and the back several is leased by a livestock rescue, and that side of it has a nice slope, but, this slopes down to a creek, as well as there is an issue of ours and neighbors septic drains (eewwww).
We have a garage, but not a basement (now wishing we did). It is a ground level 1960 ranch home, built directly on a cement foundation, no place for a root cellar.
So, I keep thinking, the only option is to find a spot out in the woods, but man this does not set well with me to leave our produce we are going to work so hard to grow, out in the woods, far from home, with no way to watch over it daily.