If you've never collected the seeds, you might be in for a treat. I've heard that if you put the seeds in a paper bag with a hole in the corner, you might be able to separate the seeds from the fluff a little easier. Otherwise gathering seeds can be a little tricky, especially if there's a breeze.

Joan, this would be an excellant comment added to the database entry itself. You enlarged jmorth's image above and made your comment, thereby starting a thread in the Plant Photos forum.
To add any general comment about this plant, go to the entry Tropical Milkweed (Asclepias curassavica) and on the left side in the blue section under the Adding Actions, you'll see the 'Post a Comment'. That will then be seen with all the other comments in that entry (scroll below all the images) rather than hidden in a comment attached to jmorth's image.