Catalpa Tree

Catalpa is a genus of deciduous trees known for broad leaves, showy trumpet-shaped flowers, and long, slender seed capsules. The genus includes species native to eastern Asia, eastern North America, and the Caribbean. [Kew’s Plants of the World Online](https://powo.science.kew.org/taxon/30022327-2) recognizes the genus and its family, while [Trees and Shrubs Online](https://www.treesandshrubsonline.org/articles/catalpa/) summarizes its variation and garden features. ## Landscape use Catalpas are commonly grown as specimen or shade trees where their broad crowns and large leaves have room to develop. Species and forms differ in mature size, crown shape, flowering, and hardiness, so the exact selection matters when planning a site. Long capsules may remain on branches into winter and contribute to seasonal cleanup. ## Foliage and flowers Most garden catalpas have large, simple leaves and clusters of bell-shaped, often white flowers in early summer. The flowers are followed by narrow, bean-like capsules containing winged seeds. Details vary among species, including the Chinese and North American members of the genus. ## Siting and soil Provide adequate room for the mature crown and a well-drained root zone. Sun exposure, moisture needs, and cold tolerance depend on the species; consult the profile for the selected Catalpa before planting. ## Maintenance Remove dead or crossing branches as needed and clear fallen capsules from paths. Avoid hard pruning that disrupts the natural canopy, and allow space for spreading branches.