THORNLESS HONEY LOCUST(Gleditsia triacanthos inermis)
Leaflets are arranged in two rows along an axis.Leaves are paired and stalkless; with fine wavy edges. Shiny dark green on top.Beneath the leaf, they are coloured dull yellow-green and are nearly hairless. In autumn, the leaves turn yellow. Leaf length ranges from 10 - 20 cm, while individual leaflets range from 1- 3 cm long. Flowers:
Male and female flowers are usually on separate twigs or trees. Fruit:
- Bell-shaped with 5 petals.
- Covered with fine hairs.
- Placed in short narrow clusters at leaf bases in late spring.
- 10 millimetres wide.
Podless on campus. Twigs:
- Shiny brown.
Gray-brown or black.
Long narrow fissures and scaly ridges.In winter, the bark contrasts nicely with the snow. Height:
24 metres. Diameter:
0.8 metres. Growth Rate:
Fast growing. A 6- to 8-foot thornless honey locust will become 20 to 25 feet tall in five or six years.
Species Requirements Distribution Range:
Located in extreme S. Ontario to central Pennsylvania, then south to NW. Florida, west to SE. Texas, and north to SE. South Dakota. Zone: 4 to 9 Habitat:
- Honey Locusts are usually situated in moist soils of river flood plains located in mixed forests.
- However, they sometimes survive on dry upland limestone hills and waste places.
Full sun/partial shade. Tolerance to Salt:
- Needs full sun for optimal growth.
High Tolerance. Extremely salt tolerant. Tolerance to Shade:
Intolerant. Preferred Soil:
Grow best in partially well-drained soil; does best in moist bottomlands or soils with high pH. Can grow in sandy, loam, or clay soil types.
Soil must be deep enough to accommodate the trees' long root structures. However, they will tolerate almost any soil condition, even alkaline, and the deep roots withstand drought.pH Range: 4.5 to 7.3
Cankers. Powdery mildew. Rust. Wood decay. Air pollution.Common Pests:
- Honey locust borer.
- Pod gall midge.
Honey locust plant bug. Leafhopper. Spider Mite. Bagworm. Spring and Fall Cankerworms. Walnut Caterpillar. Twig Girdler. Scales. Cowpea aphid. Whitefly.
- They are sensitive to ozone.
- Susceptible to mimosa webworms, leaf hoppers, spider mites, and leaf galls. Webworms are the worst problem, occasionally defoliating trees by August.
- Wildlife and livestock consume the honey-like, sweet pulp of the pods.
- It is a popular tree for attracting wildlife.
- This hardy species is popular for shade.
- During the summer it casts a filtered shade in which it is easy to grow grass.
- Established trees can tolerate drought.
- They endure the polluted air of cities as well as in the suburbs.
- Nice street tree.
Prune young thornless honey locusts in fall (September, October). Older trees rarely require pruning. In autumn, one does not have to rake the leaves because they dry and crumble as they fall.
- Plant thornless, podless varieties.
Easy to transplant because it withstands a wide range of conditions.Spray twice yearly to control webworms.
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