About this tree
Catalpa bignonioides is a medium-sized deciduous tree native to the southeastern United States. It typically grows 10–15 m tall and is recognized for its large, heart-shaped leaves and striking floral display. In early summer, it produces clusters of white, trumpet-shaped flowers with purple and yellow markings, which attract bees and butterflies. After flowering, it develops long, slender seed pods resembling green beans, which hang from the branches into winter. Its foliage is a lush green and turns yellow before falling in autumn. With its broad crown and large leaves, the tree provides ample shade, making it a popular ornamental species in parks and gardens. It offers nesting opportunities for birds and shelter for insects, especially caterpillars of the catalpa sphinx moth, which are a key element of its ecological relationships in its native habitat. The caterpillars are often used as fishing bait in North America. Southern catalpa tolerates a range of soil conditions, including poor or compacted soils, and can survive occasional flooding. Despite its American origin, it has become a familiar sight in European ornamental plantings due to its tropical appearance and its tolerance of urban stressors.