Well the cold zapped my last hanging basket that was still looking nice even though I put it in the shed. The patches of ferns (Boston?) that survived over last winter may not still be with us, except a few against a wall. I wonder if they can grow back from dropped spores or if the spores are also so tender? Luckily, the 1,000 or so Lycoris bulbs I'd just excavated survived in the shed, still trying to get them all planted. Mini garden suffered some losses (expected) but many plants still look alive, so that's incredibly awesome. Anything 'marginal' here about being deciduous lost its' foliage, unlike many winters when many same entities remain evergreen. The good news is that a lot of marginally hardy weeds that had survived last winter should now be killed. Reduced insect populations, at least at first this spring.
A lot of my plants are in a room that we closed off for the 2 really cold nights, got down to 47 in there the 2nd night. If that upset any of the plants, it's not yet apparent.
I'm think it's mentally easier to outdoor-garden up north, where winter is coming for sure, and your zone never 'fluctuates.' Sure you might have an unusually warm spell a few times, but stuff that's supposed to die does so reliably. No wasted hope. I never spent a second of time doing any hullabaloo to prepare for winter in OH except to rake leaves onto beds, bring house plants back inside, and excavate tender bulbs for dormant storage in basement. Then you stay inside for at least 4 months, not pulling a single weed, mowing, deadheading, raking, enlarging beds, pruning, moving plants around. (Except mowing, all stuff that's happened here so far this year, though the deadheading was for a Hydrangea that was in full bloom when it got zapped.) But I never was a fan of having nothing to do, I love it here, even though there's weeds to be pulled in January.