I don't have an answer for you...someone will soon...just wanted to say from the Florida panhandle. You will love it here...very friendly and helpful folks.
Each cloud has a silver lineing if only you look for it.
From what I find Bauhinia would have moderate tolerance to salt. http://www.rockledgegardens.co...
What a beautiful tree, wish I could grow one here. Do you have a photo of yours you can show us?
I see Hetty has one. Maybe she can give us more information @Dutchlady1