Name: Daisy I Reno, Nv (Zone 6b) Not all who wander are lost
Maybe Northern Catalpa.. Closer photos of leaves and flowers would make an ID easier.
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Name: John Scott County, KY (Zone 5b) You can't have too many viburnums..
Yes, in Maryland that is probably Catalpa speciosa - also known as Fishbait Tree for the Catalpa Worms (butterfly larvae) that coexist, and make for an angler's favorite free fly...