Posted: 06/08/2014 at 08:23
Are you going to save your own seed, OL?
Not sure of the time scale, so many variables, such as weather involved. However, if you do intend to save your seed (not recommended) wait until the seed pods turn crispy brown, extract the seed, put the seed in a paper bag (not plastic) then keep in a cool place until needed.
PS. I keep mine from the suppliers in an airtight tin in a outhouse.