Southern Catalpa (Catalpa bignonioides): Essential Guide Outdoors column: Uncommon catalpa tree has roots in the region's history Chicago Tribune The Northern Catalpa Tree Extension Old catalpa hi res stock photography and images Alamy Catalpa Seeds naturesnippets In autumn, mature catalpa seed pods turn brown and often hang on the tree through late fall and into winter. Today's @marthastewartblog looks at some of the seeds, berries, and cones of