Indian Bean Tree Gardening In Pearls A Pruning Guide for the Catalpa: When, Why & How? MOOWY Polk Salad Annie Outdoors column: Uncommon catalpa tree has roots in the region's history Chicago Tribune Smoke Catalpa Pods Catalpa (Catalpa speciosa) The Northern Catalpa Tree Extension While catalpa trees are not generally considered highly toxic, some parts of the tree, particularly the roots, are known to be poisonous according to the USDA Plants Database. The leaves and seed pods