Indian bean tree (catalpa tree) bean uses? : r foraging How Good Is Catalpa Firewood? Axe Adviser The beans pods on the catalpa are nearly as beautiful as the flowers. : r marijuanaenthusiasts No these aren't giant tree green beans, but instead the seed pod of the northern catalpa. These bean like pods can grow to be 20" long and contain numerous 1" long seeds. #haverfordcollegearboretum # Grand Island Vapors