Huge, heart-shaped leaves and large, upright clusters of trumpet-shaped, 2-in.-wide flowers give these trees a distinctly tropical look. White blooms marked with yellow and soft brown appear in late spring and summer, and are followed by long, bean-shaped seed capsules sometimes called Indian beans.
Takes a wide range of soils and temperatures, but plant where strong winds won’t shred leaves. Dropped flowers and seed capsules can be messy. Shape young plants, shortening side branches as the tree grows; when branching begins at the desired height, remove lower branches. On established trees, head back or thin out branches that look out of balance.
For the tree sometimes called desert catalpa, see Chilopsis linearis.Catalpa speciosa
Native to central U.S., this tree grows to 40–60 ft. tall, 20 to 40 ft. wide. Heart-shaped leaves are 6–12 in. long and odorless when crushed. Fewer flowers per cluster than for C. bignonioides.
Propagated from a plant collected at the abandoned farm of Rudolph Boysen in 1923, this fruit put Knot...
Native to the mountains of Europe. Known for their tightly packed rosettes of fleshy, evergreen leaves...
Only 1 in. tall, spreading to 3 ft. The cylindrical leaves turn red in fall and winter, green up again...