I have two towering Common (or Eastern) CATALPA trees that are in full bloom right now back in the lower reaches of my property. The ground around them is covered with blossoms that have fallen.
The clusters of flowers look rather orchid-like, don't they? According to my tree identification book, these trees are common in the south but have migrated as far north as New England. Later in the year, long seed pods will be hanging from these trees. They are rather messy so I'm glad they are in an area where they can 'do their thing' in a naturalized setting. The leaves are huge and give new meaning to 'falling leaves' each autumn. [iPhone photos are mine]