Different heights

Generally, the height of Catalpa trees can grow to about 30 meters, but catalpa trees can only grow to 15-20 meters, so it is easy to distinguish the height

Different crown

The crown of catalpa tree is narrow and long, obovate, the bark is grayish brown, the crown is straight, and the main branches are open and extended. However, the crown of Catalpa is oval, and the bark is brown or yellowish gray

Different blade shapes

The leaves of Catalpa are triangular and oval, the leaf ends are long and pointed, and the branchlets are gray green and hairless. However, the difference of Catalpa is that its leaves are nearly round, and the length and width of leaves are almost the same

Different flowers and fruits

The flower color of Catalpa is light pink, with purplish red spots inside. Catalpa is infertile since flowering, so it often only blooms and does not bear fruit. The flowering period is in April / May. The corolla of catalpa tree is light yellow or yellowish white, with yellow stripes inside. The flowering period is longer than that of catalpa tree, and the fruit ripening period is from August to October

Different growth habits

Catalpa is cold resistant and light loving. It is suitable for fertile and humid soil. Its young trees grow slowly, with developed lateral roots, strong resistance to harmful gases and long service life. Catalpa is shade resistant and cold resistant. It is suitable for growing in temperate areas and likes deep, fertile and humid soil

There are other differences between catalpa and catalpa, which will not be repeated here. Through the above basic differences between catalpa and catalpa, we can understand that they are actually two different plants