The northern catalpa grows to a height of 40–60' and a spread of 20–40' at maturity.

Choose a bright sunny location for growing Catalpa trees. Ideally, the soil should be moist and rich, although the plant can tolerate dry and inhospitable sites. Dig a hole twice as deep and twice as wide as the root ball. Fluff out the roots to the edges of the hole and fill in around them with well worked soil.

Of the four most well-known species of catalpa trees (Catalpa spp.), two are native to the United States and two to China. As a group, catalpas are known for their large, ornamental flowers and for the long, narrow seed pods that resemble beans from a distance.

While there are six species of catalpas in the world, only two are North American natives. ... All three species sport large, heart-shaped leaves and 8- to 22-inch-long, slender cigar-shaped seed pods that break open in late winter and spring to release winged seeds that scatter on the breeze.. . . . .364011235666!]0000000000000009783314145135!]