The upside-down tomato experiment on the patio has failed. It was looking good for awhile (the above photo was taken several days after planting it), but it looks like the patio simply does not get enough sunlight for tomatoes and other shade intolerant plants to do well. The two huge shade trees give it privacy and make it comfortable even when the Atlanta heat is at its worst, but it's definitely not a tomato environment. The plant struggled for awhile, got leggier and stranger looking, and finally quietly died. The tomato and pepper plants in pots are still green, still trying to grow, but it's pretty clear if we had to subsist off what they might produce we'd starve in short order.
On the other hand, the upside-down tomatoes up at the retirement bunker are reportedly doing well. We tried a low-budget suggestion Tracy had posted a couple months ago on Possum Living, and the last I heard the tomatoes in the milk cartons were doing better than the tomatoes in the garden. Most of the upside-down tomatoes I'd seen before used 5-gallon buckets, but the one-gallon milk jugs seem to work, and for sure are a lot lighter to hang.