My sister and I both grew elephant ears for the first time this summer. We are wanting to store the tubers for the winter, so we dug the plants up this week. This probably sounds stupid, but we don't see any tubers or bulbs, as some people call them. We thought we would have a large bulb when we dug them up, but all we see is roots and something thicker than the roots that could be tubers but they are only about 6" long and about as round as a pencil. Are these things the tubers? They do not look like the bulbs we have seen for sale for elephant ears and they are not nearly as big as the tubers we store from cannas and other tropicals. Thank you for any help you can give us!