Hi Hyland - welcome to the Monarch Watch Forums!
Our July 2005 Newsletter included an article on the "Harvest and Storage of Milkweed Seeds" - you can read it at
Also, be sure to check out our "Growing Milkweeds" information at
In frost-free zones Tropical Milkweed is a perennial (it acts as an annual here in KS) so as long as the seeds are mature (seed pods about to split or recently split open) you should be able to plant them right away.
As for the cuttings, you may want to use a rooting hormore and stick them into some soil to speed things up a bit - or try half and half to see which method works better for you.