Answer: Caladiums won't begin to sprout until the soil temperature is quite warm - Soil temperature needs to be at least 70 degrees. I would give the bulbs a little more time to sprout. If they don't sprout by the end of June, dig a few up and examine them. If there are no sprouts and no roots, they are dead and I'm sure you can get replacements for them. Let's hope they sprout soon!
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