Gleditsia triacanthos f. inermis [sold as Shademaster®]
Shademaster Thornless Honeylocust

Gleditsia triacanthos f. inermis [sold as Shademaster®] - Summer Habit

Family:

Fabaceae (Bean Family) 51

Genus:

Gleditsia (Honeylocust, Honey Locust) 7

Plant Type:

Tree 583

Growth Forms:

Upright 583

Hardiness:

USDA Zone 4 533

Deciduous / Evergreen:

Deciduous 859

Flower Notes:

Yellow (Spring; not ornamentally important)

Foliage Notes:

Green (Dark green pinnately compound summer foliage); Yellow (Pleasant, bright yellow fall coloration)

Fruit Notes:

Brown (Rarely produced long (7-18"), interesting pods)

Ultimate Height:

45-70 feet

Ultimate Spread:

35-50 feet

Bloom Times:

Light Requirements:

Soil Notes:

Widely adapted to soils

Diagnostic Characteristics:

Leaves alternate, pinnately or bipinnately compound, 6-8" long with pubescent rachis and leaflets only 0.3-1.5" long. Zig-zag branches with swollen nodes of a shining red to reddish to greenish-brown color. Fruits (when present) are 7-18" reddish-brown pods that persist. Bark is divided into flat plates, separated by deep ridges.

Purdue Plant Doctor

Parts and Problems of Honey Locust

Special Characteristics:

Drought Tolerant 292

Salt Tolerant 61

Tolerant of Poor Site Conditions 191

Additional Information

The Shademaster Thornless Honeylocust is a popular cultivar that is nearly fruitless and has dark green, finely compound leaves on ascending branches that provide a pleasant, dappled shade in the summer. The thornless forma inermis is only sold in commerce, as the profuse thorns of the species type can be a liability. Mimosa webworm and locust mite are serious pests in the Midwest, and are becoming more serious (especially in areas tending toward monoculture). Can be controlled with spraying.

Plant Photo Gallery

Summer Habit

Foliage

Bark

18 Gleditsia triacanthos f. inermis [sold as Shademaster®] found

Building Map...

= Heritage plant = Memorial plant

Number	Accession ID	Location
1	ORIG_4867*A	HILL
2	ORIG_4872*A	HILL
3	ORIG_4838*A	HORTPARK
4	ORIG_4837*A	HORTPARK
5	ORIG_4836*A	HORTPARK
6	ORIG_4870*A	HILL
7	ORIG_4880*A	HILL
8	ORIG_0199*A	FWLR
9	ORIG_4871*A	HILL
10	ORIG_4882*A	HILL
11	2021_00085*A	HILL
12	2023_00108*B	BHEE
13	2023_00108*C	BHEE
14	2023_00108*D	BHEE
15	2024_00155*A	HARR
16	2024_00155*B	MCUT
17	2024_00155*C	MCUT
18	2024_00155*D	MCUT

Additional Information

Plant Photo Gallery

18 Gleditsia triacanthos f. inermis [sold as Shademaster®] found

Other plants like this Gleditsia triacanthos f. inermis [sold as Shademaster®] (Shademaster Thornless Honeylocust)