The catalpa tree is blooming in the Cherry Creek Pollinator Habitat. Northern Catalpa-Catalpa speciosa has big flowers, big stems, big pods and even bigger leaves. It is quite stunning when it is blooming. It is native to the United States and is a nice tree to have in the landscape if you have the room. There is a catalpa sphinx moth caterpillar that feeds on the leaves and bumble bees visit the flowers.