Caladiums are so neat - there are three pots full on my porch, all have spikes, but one of the spikes unfurled over the last 36 hours. There are three or four more just beginning to unfurl.
I bought a bag of tubers at Walmart for less than $3 and planted them April 16th. I kept the pots indoors until the low temps stayed above 50 F, carrying them out to bask in the sun during the day until the spikes showed, then I moved them to the porch.
First time I ever tried growing
them from dried tubers! Next spring
I'm gonna fill a whole bed with them - I have a nice semi-shade spot under a big palm tree
that has hostas in it now.