Common Name: thornless honeylocustScientific Name Genus: GleditsiaFamily Name: FabaceaeIdentification NotesBest grown in well-drained soil in full sun. Tolerance of soil conditions, wind, heat, drought, and deer. Forma inermis is a naturally occurring thornless variety. Cutlvars of forma inermis are what are available in trade.Native HabitatNative from the midwest to eastern United States Growth HabitHoneylocus have a rounded to spreading form growing 30-70' tall and 25-40' wide (can grow taller). LeavesLeaves are bipinnately compound. The compound leaf is 4-8" long with the elliptic leaflets growing up to 1". Fall color is bright yellow. Bark and StemsForma inermis is the thornless variety. The species has thorns along the trunk and branches than can be up to 3" long. FlowersFlowers are inconspicuous greenish white to greenish yellow in racemes. Not ornamental. FruitFlattened , twisted, dark purple brown seedpods can grow up to 18". Many cultivars do not have seedpods. Bloom TimeSpring Common ProblemsDisease problems can include leaf spot, canker, witches broom, powdery mildew and rust. Insect problems include borers, webworms, bagworms, leafhoppers, and leaf miners. Varieties or CultivarsImpcole - Imperial - thornless and almost seedless variety. Rounded form growing 30-40 feet tall. Skycole - Skyline - pyramidal form. Thornless and almost seedless. Grows 40-45 feel tall. Sunburst - foliage emerges yellow in the spring and lime green foliage in summer. Landscape UsesGood for lawns. Popular street and parking lot tree.