Imperial Honeylocust

Gleditsia triacanthos f. inermis 'Impcole'

Plant Details:

Plant Type: Deciduous Tree
Plant Family: Fabaceae
Plant Description: A medium-sized shade tree with an excellent rounded shape and relatively straight, symmetrical branches. Although the species has thorns and large pods, this variety has no thorns and does not usually produce pods. The leaves are fernlike and composed of numerous leaflets, creating light dappled shade and making fall clean-up easy. The green rounded leaflets have serrated edges and will turn yellow in autumn. Flowers are yellow and insignificant. Very tolerant of dry and compacted soils as well as periods of drought and excess moisture.


Maintenance Type: Tree - Deciduous
Plant Care: Tree - Deciduous (single-stemmed woody plants that lose their leaves every winter): Prune regularly to promote health, provide air circulation, maintain a desirable shape, and to remove dead or damaged branches. Pruning is best done in late winter to early spring for most trees. With spring blooming trees, prune after the blooms are spent. Choose species that are resistant to pest damage. Monitor the tree for pests, diseases or other ailments on a regular basis. Protect the trunk especially where maintenance activities, such as mowing, may cause damage. Newly planted trees in areas with high exposure should have the trunk protected during the winter.

Plant Attributes:

Mature Size: 30-35' tall and wide
Utah Native: No
Plant Select: No
Pollinator Friendly: No
Localscapes: Tree, Perimeter Plant, Park Strip Plant
Foliage Interest: No
Foliage Colors: Green

Growing Conditions:

Hardiness Zone: 4 to 8
Light Requirement: Full Sun (6+ hrs sun), Part Shade (4-6 hrs morning sun), Part Sun (4-6 hrs afternoon sun)
Irrigation Requirement:     Low (1/2" every 10-14 days)
Salt Tolerant: Yes
Deer Resistant: Unknown

Garden Location:

  • Commercial Concepts
    • JVWCD Building
  • Neighborhood Landscapes
    • A Desert with Altitude
    • Harvest Haven
    • Prudent Perennials
    • Tradition with a Twist
    • Traditional Yet Thrifty
    • Waterwise Woodlands
  • Spring
  • Summer
  • Fall
  • Winter