Last spring, I planted some seed onions in the empty spaces around my tomato plants. But then the tomatoes went nuts and took over the whole garden. The onion plants soon disappeared under all the tomato vines. After removing the tomatoes, I've found that just a few of the onions survived but the bulbs are not any larger than when we planted them.
If I plant them back in the ground, will they survive over the winter and continue to grow in the spring? Should I store them indoors somehow to replant later or should I just use them as green onions now?