Zone 4 or 5 and has been introduced to many parts of the world. It
grows to a height of up to 45 m (Lance, 2004, p. 154) and an age of
about 125 years (USDAFS, 1990, p. 358), and it may resprout from
the rootstock. Its leaves turn a brilliant autumn yellow (Figure 1D).
In bloom, it bears tassels of greenish-yellow to cream-colored, fragrant
flower catkins. Sometimes flowers emerge directly on the trunk, rather
than from younger shoots (Figure 1A). The bark is grayish-brown and
appears rather smooth, yet is somewhat sandpapery to the touch.
Figure 1. Gleditsia triacanthos. (A) Stem of a mature tree with large thorns and flowers emerging directly from the trunk's bark.
(B) A younger specimen, heavily covered in thorns. (C) A pod of last year's crop, found in May under the flowering tree shown in A.
(D) View into a honey locust's crown in fall, with autumn coloration; the fruit are visible in top right as s-shaped structures
against the sky.