Catalpas THE GARDEN WEBSITE.COM 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 The beans pods on the catalpa are nearly as beautiful as the flowers. : r marijuanaenthusiasts Indian bean tree (catalpa tree) bean uses? : r foraging Smoking "Indian Cigars" (Catalpa Beans) YouTube