Northern Catalpa
Catalpa speciosa · Deciduous Broadleaf
Plant Family
Bignoniaceae
Tree Category
Flowering Shade Tree
Variety / Cultivar
Native species (no specific cultivar identified)
Hardiness Zones
USDA Hardiness Zones 4 through 8.
About This Tree
A large, fast-growing deciduous tree with a somewhat irregular, oval-to-open rounded crown. Noted for its large heart-shaped leaves, showy white flower clusters, and long, bean-like seed pods.
Leaf Characteristics
Large, heart-shaped (cordate) leaves, 6-12 inches long. Medium green color, usually opposite or whorled arrangement, with smooth (entire) margins and a soft, hairy underside.
Bark Characteristics
Grayish-brown, becoming thick and distinctly furrowed into scaly ridges or plates as the tree matures.
Growing Information
Origin Region
Native to the midwestern United States (Mississippi River Valley); widely naturalized across North America.
Growing Season
Leafs out late in spring; flowers in late spring to early summer (May/June); fruits into long pods in late summer; dormant in winter.
Sunlight & Water Needs
Full sun to partial shade; prefers moist, fertile, well-drained soils but is highly adaptable to various soil types including wet or dry conditions.
Mature Size
Reaches 40-70 feet in height with a spread of 20-50 feet. Fast growth rate with a lifespan of approximately 60-150 years.
Special Characteristics
Highly tolerant of urban conditions and salt; features showy bell-shaped white flowers with purple and yellow inner spotting; develops distinctive 8-20 inch long seed pods.
Wildlife & Ecology
Host plant for the Catalpa Sphinx Moth; flowers provide nectar for bees and hummingbirds; provides nesting sites for large birds in its irregular branching structure.