Even in Florida, this is the time to plant milkweed seeds. Our native species require the small bit of "cold" we receive. I'm no expert on growing anything not in a subtropical zone, but I say go for it!
I just remembered a site I've ordered seeds from before and they have good instructions for planting milkweed. If you know what species you have, that would help. Here's a link to their milkweed species. You can read the instructions for sowing the seeds, but it seems like most of them say to plant in the fall, the plants germinate in the spring, and then you thin them.
http://www.everwilde.com/store...
