eclayne- 60 degrees is the minimum temp I would store them at. Check them often too and if you find a bulb rotting or drying out, Toss it!! Depending on how big the original bulbs you planted were a caladium bulbs is going to form what I refer to as bulblets. A caladium bulb will only get so big and then they'll actually start shrinking in size. One thing you could try in the Spring is about 2-3 weeks before you plan on planting them, take some of the bulbs and cut them in half with a clean knife. The inside of a caladium bulb is generally a yellowish color(some are white), let the cut pieces sit out to dry. The cut will callus over and turn a chalky white color. When you plant those two pieces of bulb they will propagate and get bigger over the course of the year. In a round about way that is how we generate our seed for planting although what we do on the commercial end is A LOT more involved than what I just described. A Lot More!!!
Basically though we plant just a chip of a bulb(we start on or about April1st), if that chip has an eye which they most likely will it'll propagate and get bigger and bigger over the course of the year.
This years harvest is producing A LOT of bulbs and the vast majority of them are BIG bulbs. We had just about perfect growing conditions this year so all the varieties are making bigger bulbs. Grade #2 bulbs(1"- 1 1/2") which are what most greenhouses and pot growers buy are going to be at a premium this year because the VAST majority of the bulbs being harvested are Grade #1(1 1/2" - 2 1/2") and bigger. There are going to be a ton of Jumbo's and bigger available this year!!! That's good and bad if that makes any sense.
Bill
