SelecTree: Tree Detail

THORNLESS HONEY LOCUST
Gleditsia triacanthos var. inermis

Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis Gleditsia triacanthos var. inermis

Photo Locations: Morris Arboretum - Philadelphia, PA, Hoyt Arboretum - Portland, OR, Los Angeles County Arboretum - Arcadia, CA, Finch Arboretum - Spokane, WA and Arnold Arboretum - Boston, MA

General Notes

Tolerates some drought. Grows poorly wher ocean salt spray occurs.

Trees may be referred to as male or female.

A Gleditsia triacanthos var. inermis in Visalia is registered as a California Big Tree. It measures 76 feet high, with a trunk circumference of 126 inches and a crown spread of 18 feet.

Family: Fabaceae

Tree Characteristics

Erect or Spreading and requires ample growing space.

Oval or Umbrella Shape.

Has Deciduous foliage.

Height: 60 feet.

Width: 40 feet.

Growth Rate: 36 or More Inches per Year.

Longevity 50 to 150 years or more.

Leaves Bipinnately Compound, Medium to Light Green, Gold, Deciduous.

Flowers Inconspicuous. Flowers in Spring or Summer. Has either male or female flowers (dioecious). Trees may be sold as male or female.

Few, Brown Pod, Very Large (Over 3.00 inches), fruiting in Summer or Fall.

Bark Black or Dark Brown, Fissured.

Shading Capacity Rated as Moderately Low in Leaf.

Shading Capacity Rated as Low out of Leaf.

Tree Site Conditions & Constraints

Sunset Zones 1 - 16 and 18 - 20.

USDA Hardiness Zones 4 - 9.

Exposure Full Sun to Partial Shade.

Wet to Dry Soil.

Drought tolerant.

Loam or Sand Texture.

Highly Acidic to Highly Alkaline Soil pH.

Seaside Tolerance is Not Suited.

Pests & Disease Information

Resistant to Verticillium. Susceptible to Invasive Shot Hole Borer, Caterpillars, Insect Galls, Pod Gall Midge and Spider Mites, Mistletoe, Phytophthora and Root Rot.

Health, Safety & Environmental Concerns

Branch Strength Rated as Medium.

Root Damage Potential Rated as Moderate.

Allergy Health Hazard.

Attracts Birds and Bees.

Cite this tree:
SelecTree. "Gleditsia triacanthos var. inermis Tree Record." 1995-2018. Dec 9, 2018.
< https://selectree.calpoly.edu/tree-detail/gleditsia-triacanthos-inermis >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.