Came across this tree in Hudson, WI that looked like it had giant green beans growing off of it, looked it up and it's called a Northern Catalpa often known as a " 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 Northern Catalpa Tree Nebraskaland Magazine Buy Northern Catalpa Tree (Catalpa speciosa) FREE SHIPPING Wilson Bros Gardens 3 Gallon Pot Catawba Tree How to Grow Indian Bean Tree (Catalpa) at Home Is Northern catalpa Safe for Children?