I edited my post above to give stats on the DD x DD seedlings. I had not previously noted that there was a noticeable difference in how they each performed when comparing them to one another. It appears that the growing conditions can and do make a difference in the performance of DD seedlings, which may also hold true of the parent .... Dragonfly Dawn.
The database lists 10 people who have Dragonfly Dawn. Please join us on this thread if you have this cultivar! Please share information (and stats, if you have them) on how it performed for you. Your information may be helpful to others who own this cultivar or for those who are researching whether Dragonfly Dawn would be a good addition to their garden.