Dame’s Rocket , an introduced species, has been added to the USWildflowers database (05/15/2017.) Scientific name is Hesperis matronalis. Photo below was taken at the John C. Wilson Park, Chattanooga, TN on Apr 22, 2017. Go to the Dame’s Rocket detail page for more information.
It’s been over a year since I added a non-native species to the USWildflowers.com database (I’ve got a big backlog of native species that I need to get added), but I’ve seen quite a few questions about the identity of this plant this spring – it’s often confused with Phlox – so I thought it would be helpful to get it into the database.