All the tobacco I have seen in flower has been really ugly as the lower leaves tend to go yellow really quickly. It may need extra N just prior to flowering to keep it looking good. Pretty flowers as you say, J.
Directly south of me, in Massachussetts, is the 'Pioneer Valley' (the valley of the Connecticut River) which is said to have the best soil in the entire country. Tobacco used to be widely grown there because it is such a high value crop and, so I have been told, produced the highest quality tobacco. It was so good, apparently, that it was exported to Cuba to be used as the wrappers for their tobacco. Cuban cigars, I gather, are seen as some of the best available.