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 Northern Catalpa Catalpa Speciosa Deciduous Trees Cold Stream Farm Catalpa Tree Pods Smoke Northern Catalpa Southern Catalpa (Catalpa bignonioides): Essential Guide Catalpa Wikipedia Catalpa Tree Pods Smoke Northern Catalpa