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 Meet My Nature Neighbor: The Catalpa Tree Heartspoken Franklin & Marshall Northern Catalpa (Catalpa speciosa) The Northern Catalpa Tree Nebraskaland Magazine Northern Catalpa 3XL Tree 8 10 ft. Tall, 1.75 2 in. Caliper ships in 3 to 4 Weeks by Bower & Branch Catalpa Wikipedia