Catalpa speciosa is a medium-sized, deciduous tree growing to 15–30 meters (49–98 ft) tall and 12 meters (39 ft) wide. It has a trunk up to 1 meter (3 ft 3 in) in diameter, with brown to gray flaky bark.
The … 詳細

Catalpa speciosa was originally thought to be native only to a small area of the midwestern United States near the confluence of the Mississippi and Ohio Rivers. However, in 1976, investigation of an archeological … 詳細

It is widely planted as an ornamental tree. It is adapted to moist, high pH soil and full sun, but has been able to grow almost anywhere in North America. In the UK it has gained the Royal Horticultural Society's Award of Garden Merit (confirmed … 詳細

Although northern catalpa can have several diseases and pests, most are usually minor and pose no serious threat. The exception is the caterpillar of Ceratomia catalpae, which can on occasion defoliate the tree, although without … 詳細

• Arbor Day Tree Guide: "Northern Catalpa" 詳細