I have 2 Hong Kong in the ground inside my greenhouse, planted them 15 or so years ago, of course the have hit the roof and I have to prune them...but they never bloom in there. Their sole function is to be living totems for climbing aroids.
I have the following bauhinias:
yunnanensis
glabra
malabarica
galpinii
grandiderii
mexicana
and my current favorite, madagascarienses (below)
