Arboretum Trees—Honey Locust

Gleditsia triacanthos

Recognized for their intimidating thorns, honey locust is an adaptable, deciduous tree that is common in both wild and ornamental environments. Most wild types retain their spines, though thornless forms (Gleditsia triacanthos var. inermis) are generally found in urban and nursery landscapes. Historically, its timber was used as fencing and shipbuilding material due to their sturdy and rot-resistant nature, and their thorns were often used as nails to secure the timber. The name for honey locust is derived from its pod-like fruit, the pulp of which is sweet; honey locust is ironically not a significant honey plant, unlike black locust (Robinia pseudoacacia).

 

Family: Fabaceae

Foliage: Deciduous

Mature height range: 65-100 ft.

Light exposure: Partial shade to full sun

Soil preference: Moist, well-drained soil

Tolerance: Tolerates urban conditions well and transplants easily; drought and heat tolerant

Wildlife: Fruit is eaten by mammals, browsing by mammals, pollinated by insects, larval host plant for silver-spotted skipper (Epargyreus clarus), bicolored honey locust moth (Sphingicampa bicolor), and bisected honey locust moth (Sphingicampa bisecta)

 

Closeup on honey locust thorns by Greg Hume – Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=17878744

 

Honey locust autumn color by Famartin – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=36095664

 

Honey locust seedpods by FUchesco – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=107636050