Yup, i have a MD609 in a pot on my balcony that is flowering since october 2015... If kept the right way, baccy will continue to flower, i collected literally thousands of seeds. If the weather keeps up (or If you keep the plant inside the house in cold weather) tobacco can flower almost endlessly. After a while, the seed pods turn brown and dry, that is the moment to hang in a very dry place for a few days, then break the pods and sift the seeds. Very simple... BUT storing the seeds so that they are viable for a long time is much more difficult! This involves low humidity, absence of light and low temps. I find it easier to buy seeds from a reputable source every year, and to re-grow my saved seeds every other year
Pier