Northern Catalpa

Northern catalpa is a large deciduous tree with very large heart-shaped leaves and a broad, irregular crown. In late spring to early summer, clusters of white, bell-shaped flowers marked with yellow and purple are followed by long, narrow seed pods. [Oregon State University](https://landscapeplants.oregonstate.edu/plants/catalpa-speciosa) records a mature size of about 40–60 feet tall and 20–40 feet wide, while [North Carolina Extension](https://plants.ces.ncsu.edu/plants/catalpa-speciosa/common-name/northern-catalpa/) describes its seasonal features and wildlife value. ## Form and seasonal interest The canopy can provide substantial summer shade, so give the tree room to spread. Large leaves turn yellow before dropping, and some long pods may remain on the branches through winter. Its coarse texture and showy flowers suit parks and spacious residential landscapes. ## Siting Plant in full sun or partial shade. Catalpa tolerates a range of soil types and can grow in moist or dry conditions, though deep, moist, fertile soil is preferred. Consider the mature crown and overhead clearance before planting; branches and wood can be brittle, so avoid high exposure or locations above frequently used areas. ## Maintenance Expect leaf and pod litter, especially beneath mature trees. Inspect the structure periodically and arrange pruning with a qualified arborist when needed. Northern catalpa is hardy to USDA Zone 4; local growth and final size vary with climate and site conditions.