Southern Catalpa" Images Browse 1,661 Stock Photos, Vectors, and Video Adobe Stock 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 Trees called Johnny smokers by kids, why? The beans pods on the catalpa are nearly as beautiful as the flowers. : r marijuanaenthusiasts Northern catalpa Catalpa speciosa The Morton Arboretum Ferida's Backyard: Catalpa Pros and Cons