I sow some tamiana seeds too, I was experimenting with intergeneric crosses, and it tuns out that the she just self pollinate, giving me a fake hopes but also giving me some very important dates:
Pollinating: 06.12.11 (I did it then and on the next morning I found the flower on my floor so this must be the date +-2/3 days)
Collecting seeds: 26-27.01.12 (2 dates because there was two seed pods)
Germinating: 07.02.12 (then i saw the first one)
First bloomed: 27.07.12
The seed pods mature quick, they self ripped, and they bloom very soon, so we will see in a half an year.
I take this "It's a really stable species" as a challenge!